A number is a factor of 72, a multiple of 8. What's the number

A number is a factor of 72, a multiple of 8. What's the number

72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Multiple of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80
This number may be: 8, 24, 72