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Factors of 1420: As Taught by a Math Tutor
Methods
What are the Factors of 1420?
As your math tutor, I’m here to guide you through the different types of factors of 1420. Understanding factors is key to mastering multiplication, division, and prime numbers. Here’s a breakdown:
• Factors of 1420: 1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420
• Sum of Factors of 1420: 3024
• Negative Factors of 1420: -1, -2, -4, -5, -10, -20, -71, -142, -284, -355, -710, -1420
• Prime Factors of 1420: 2, 5, 71
• Prime Factorization of 1420: 2^2 × 5^1 × 71^1
There are two main ways a math tutor would explain how to find the factors of 1420: using factor pairs and prime factorization. Let’s explore both!
The Factor Pairs of 1420
As your math tutor, I’m here to help you break down factor pairs of 1420 step by step!
Factor pairs of 1420 are any two numbers that, when multiplied together, equal 1420. The question to ask is “what two numbers multiplied together equal 1420?” Every factor can be paired with another factor, and multiplying the two will result in 1420.
To find the factor pairs of 1420, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1420. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2.
Step 2:
Divide 1420 by the smallest prime factor, in this case, 2:
1420 ÷ 2 = 710
2 and 710 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 710 as the new focus. Find the smallest prime factor that isn’t 1, and divide 710 by that number. In this case, 2 is the new smallest prime factor:
710 ÷ 2 = 355
Remember that this new factor pair is only for the factors of 710, not 1420. So, to finish the factor pair for 1420, you’d multiply 2 and 2 before pairing with 355:
2 x 2 = 4
Step 4:
Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs.
Here are all the factor pairs for 1420:
(1, 1420), (2, 710), (4, 355), (5, 284), (10, 142), (20, 71)
So, to list all the factors of 1420: 1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420
The negative factors of 1420 would be: -1, -2, -4, -5, -10, -20, -71, -142, -284, -355, -710, -1420
Now you’ve got it! A math tutor would always encourage you to practice with different numbers to reinforce your understanding of factor pairs. Try another one!
Prime Factorization of 1420
To find the prime factorization of 1420, we break it down step by step until only prime factors remain. Then, we express 1420 as a product of these prime factors multiplied together. Let’s go through the process and simplify it like a math tutor would!
The process of finding the prime factorization of 1420 only has a few differences from the above method of finding the factors of 1420. Instead of ensuring we find the right factor pairs, we continue to factor each step until we are left with only the list of smallest prime factors greater than 1.
Here are the steps for finding the prime factorization of 1420:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1420. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2.
Step 2:
Divide 1420 by the smallest prime factor, in this case, 2
1420 ÷ 2 = 710
2 becomes the first number in our prime factorization.
Step 3:
Repeat Steps 1 and 2, using 710 as the new focus. Find the smallest prime factor that isn’t 1, and divide 710 by that number. The smallest prime factor you pick for 710 will then be the next prime factor. If you keep repeating this process, there will be a point where there will be no more prime factors left, which leaves you with the prime factors for prime factorization.
So, the unique prime factors of 1420 are: 2, 5, 71
Math Tutor Suggests: Find the Factors of Other Numbers
Practice your factoring skills by exploring how to factor other numbers, like the ones below:
Factors of 97 - The factors of 97 are 1, 97
Factors of 84 - The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Factors of 149 - The factors of 149 are 1, 149
Factors of 31 - The factors of 31 are 1, 31
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