What are the common factors of 8 16 and 36?

The factors of 8 are 1, 2, 4, and 8. The factors of 16 are 1, 2, 4, 8, and 16. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 8, 16, and 36 are 1, 2, and 4.