What is the greatest common factor of 4 and 16?

The greatest common factor of 4 and 16 is 4.

The factors of 4 are: 1, 2, 4

The factors of 16 are: 1, 2, 4, 8, 16

The common factors are: 1, 2, 4

• The Greatest Common Factor (GCF) is: 4

It is: 4