What prime factors are common to 540 and 360?

Answer 1

If you're looking for prime factors:

180 = 2 x 2 x 3 x 3 x 5

54 = 2 x 3 x 3 x 3

If you're looking for non-prime factors (numbers a number is divisible by):

180 -> 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 90 180

54 -> 1 2 3 6 9 18 27 54

Answer 2

Common factors of 180 and 540 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, and 180.

Answer 3

The highest common factor of both numbers is 18

Answer 4

2, 3 and 5