**Greatest Common Factor (GCF) of 5, 20 and 31**

We here at the Fraction Calculator often determine the Greatest Common Factor (GCF) for numbers such as 5, 20 and 31, because we use the GCF to lower the denominators of our fractions.

The Greatest Common Factor of 5, 20 and 31 is the greatest number (factor) that you can evenly divide 5, 20 and 31 by.

To find the Greatest Common Factor of 5, 20 and 31, we first have to identify all the factors of each number. Then we see which factors they have in common, and finally we pick the largest number they have in common, which is the Greatest Common Factor (GCF) of 5, 20 and 31.

The factors of 5 are 1 and 5. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 31 are 1 and 31. The highest factor they have in common is 1. Therefore, the Greatest Common Factor (GCF) of 5, 20 and 31 is as follows:

**GCF(5,20,31) = 1**

**Greatest Common Factor Calculator**

Please enter another two or three numbers below so we can calculate the Greatest Common Factor (GCF) for you:

**Greatest Common Factor (GCF) of 5, 20 and 32**

Here is the next set of numbers we have calculated the GCF for. Check it out!