1 is a common factor of all whole numbers. To find common factors: List the factors of each number. Compare the factors to find numbers that are the same (or common) in each list.

Refresh your knowledge with these guides on factor trees and writing numbers as a product of prime factors. List the factors of each number. Compare the lists to find the greatest number common to ...

The Greatest Common Factor, or GCF, is the largest integer that is a factor of two or more integers. Say for example we have three integers in question. So, we’ve got 12, 24, and 6. So, on the other ...