The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 21 are 1, 3, 7, and 21.The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36The factors of 14 are 1, 2, 7 and 14.gcf's:21 and 14: 721 and 36: 336 and 14: 236, 14, and 21: 1
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 15 are: 1, 3, 5, 15 The factors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
81: 1, 3, 9, 27, 81 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 21 are 1, 3, 7, and 21.The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36The factors of 14 are 1, 2, 7 and 14.gcf's:21 and 14: 721 and 36: 336 and 14: 236, 14, and 21: 1
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 63 are: 1, 3, 7, 9, 21, 63
The factors of 15 are: 1, 3, 5, 15 The factors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
81: 1, 3, 9, 27, 81 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 9 are 1, 3, and 9. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.
The factors of 14 are: 1, 2, 7, 14 The factors of 189 are: 1, 3, 7, 9, 21, 27, 63, 189
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 252 are 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126 and 252.
Factors of 63: 1, 3, 7, 9, 21, 63.Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.Factors of 126: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126.GCF (63, 84, 126) = 21