What are the common factors of 180 and 240?

The factors of 180 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, and 180.

The factors of 240 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, and 240. The common factors of 180 and 240 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.