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This greatest common factor calculator will find for you the greatest factor two numbers or more numbers have in common. See also the steps that led to the answer!
Recall that the factor of a number is any number that divides the number evenly.
For example factors for 10 are 1, 2, 5, and 10
Factors of 20 are 1, 2, 4, 5, 10, and 20
As you can see common factors for 10 and 20 are 1, 2, 5, and 10. However, the greatest one is 10, so 10 is the greatest common factor.
The greatest common factor calculator can also be used to find an answer to the following math problems:
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