Factor pairs of 130 are any two numbers that, when multiplied together, equal 130. The question to ask is “what two numbers multiplied together equal 130?” Every factor can be paired with another factor, and multiplying the two will result in 130.
To find the factor pairs of 130, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 130. 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 130 by the smallest prime factor, in this case, 2:
130 ÷ 2 = 65
2 and 65 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 65 as the new focus. Find the smallest prime factor that isn’t 1, and divide 65 by that number. In this case, 5 is the new smallest prime factor:
65 ÷ 5 = 13
Remember that this new factor pair is only for the factors of 65, not 130. So, to finish the factor pair for 130, you’d multiply 2 and 5 before pairing with 13:
2 x 5 = 10
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 130:
(1, 130), (2, 65), (5, 26), (10, 13)
So, to list all the factors of 130: 1, 2, 5, 10, 13, 26, 65, 130
The negative factors of 130 would be: -1, -2, -5, -10, -13, -26, -65, -130