What are the common factors of 8 20 and 36?

The common factors of 8, 20, and 36 are the numbers that can divide each of these numbers without leaving a remainder. The factors of 8 are 1, 2, 4, and 8. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 8, 20, and 36 are 1, 2, and 4.