Factor pairs of 110 are any two numbers that, when multiplied together, equal 110. The question to ask is “what two numbers multiplied together equal 110?” Every factor can be paired with another factor, and multiplying the two will result in 110.
To find the factor pairs of 110, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 110. 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 110 by the smallest prime factor, in this case, 2:
110 ÷ 2 = 55
2 and 55 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 55 as the new focus. Find the smallest prime factor that isn’t 1, and divide 55 by that number. In this case, 5 is the new smallest prime factor:
55 ÷ 5 = 11
Remember that this new factor pair is only for the factors of 55, not 110. So, to finish the factor pair for 110, you’d multiply 2 and 5 before pairing with 11:
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 110:
(1, 110), (2, 55), (5, 22), (10, 11)
So, to list all the factors of 110: 1, 2, 5, 10, 11, 22, 55, 110
The negative factors of 110 would be: -1, -2, -5, -10, -11, -22, -55, -110