is-3-a-factor-of-12

is 3 a factor of 12 is 3 a factor of 126 is 3 a factor of 120 is 3 a factor of 121 is 3 a factor of 123 is 3 a factor of 125 is 3 a factor of 129 is 3 a common factor of 12 is 3 a common factor of 12 and 15 is 3 a common factor of 12 and 20