1 and 3.
1 and 3
The factors of 51 are: 1, 3, 17, 51The factors of 75 are: 1, 3, 5, 15, 25, 75The factors of 81 are: 1, 3, 9, 27, 81The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3
The LCM of 81 and 51 is 34 x 17 = 1,377.
The common factors of 21 and 51 are: 1 and 3
The factors of 81 are: 1, 3, 9, 27, 81 The factors of 153 are: 1, 3, 9, 17, 51, 153
81 and 200 have no common prime factors.
The common factors of 15 and 81 are 1 and 3
The factors of 81 are 1, 3, 9, 27 and 81. For them to be common, they need to be compared to another set of factors.
The common factors of 72 and 81 are: 1, 3, and 9
34 and 81 share no common factors aside from 1.
The common factors of 36 and 81 are: 1, 3, and 9
81 and 169 share no common factors aside from 1.