Math and Arithmetic

Algebra

Factoring and Multiples

# Greatest Common Factor for 20 and 36?

###### Wiki User

###### January 09, 2013 12:32AM

20: 1, 2, 4, 5, 10, 20

36: 1, 2, 3, 4, 6, 9, 18, 36

The GCF is 4.

## Related Questions

###### Asked in Factoring and Multiples

### What is the greatest common factor of 20 28 and 36?

The Greatest Common Factor (GCF) of 20, 28, and 36 is 4.
The factors of 20 are 1, 2, 4, 5, and 10.
Since ten is not a factor for either 28 or 36, we can remove it
from consideration.
Five, likewise, is not a factor for either 28 or 36, so it can
be removed as well.
This leaves four, which is the greatest common factor for all
three numbers.

###### Asked in Factoring and Multiples

### What is the greatest common factor of 20 and 36?

The GCF of 20 and 36 is 4.
To find the greatest common factor, or GCF, you must first
identify the factors for each number.
For 20, its factors are 1, 2, 4, 5, 10, and 20.
For 36, its factors are 1, 2, 3, 4, 9, 12, 18, and 36.
4 is the highest (or greatest) factor they have in common, so
the GCF for 20 and 36 is 4.