What is the greatest common factor of 16 and 84?

Answer 1

One way to determine the greatest common factor is to find all the factors of the numbers and compare them.

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

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84.

The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 16 are 2, 2, 2, and 2.

The prime factors of 84 are 2, 2, 3, and 7.

The prime factors in common are 2 and 2, so the greatest common factor is 2 x 2 = 4.