The factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42. For them to be common, they need to be compared to another set of factors.
The common factors of 42 and 273 are 1, 3, 7 and 21.
The common factors of 42 and 77 are: 1 and 7
The common factors of 22 and 42 are: 1 and 2
The common factors of 42 and 92 are: 1 and 2
The Common Factors of 42 and 44 are 1, 2
The common factors of 21 42 and 84 are 21
The common factors of 42 and 44 are 1 and 2.
The common factors of 24 and 42 are 1, 2, 3 and 6
The common factors of 42 and 60 are: 1, 2, 3, and 6
The common factors of 42 and 56 are 1,2,7 and 14
The common factors of 6 and 42 are: 1, 2, 3, and 6
The common factors of 6 and 42 are 1, 2, 3 and 6.