What is the greatest common factor of 8 12 16?

The factors of 8 are: 1, 2, 4, and 8.

The factors of 12 are: 1, 2, 3, 4, 6, and 12.

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

The common factors of 8, 12, and 16 are: 1, 2, and 4.

The greatest common factor of 8, 12, and 16 is: 4.