###### Asked in Factoring and Multiples

Factoring and Multiples

# What are the common factors and greatest common factor of 30 and 40?

## Answer

###### Wiki User

###### 09/07/2015

The factors of 30 are:

1, 2, 3, 5, 6, 10, 15, 30

The factors of 40 are:

1, 2, 4, 5, 8, 10, 20, 40

**The common factors are:**

**1, 2, 5, 10**

**The Greatest Common Factor:**

**GCF = 10**

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