What are the common factors of 36 and 240 and 600?

The factors of 36 are:

1, 2, 3, 4, 6, 9, 12, 18, 36

The factors of 240 are:

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240

The factors of 600 are:

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 150, 200, 300, 600

The common factors are:

1, 2, 3, 4, 6, 12