Just 1.
The common factors of 6, 21, and 39 are 1 and 3
The factors of 21 are: 1, 3, 7, 21.The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.The common factors are: 1, 3, 7, 21
There are only two common factors for 56 and 21. They are 1 and 7.
The common factors are: 1, 3
The factors of 21 are: 1, 3, 7, 21.The factors of 33 are: 1, 3, 11, 33.The common factors are: 1, 3The GCF is: 3
The factors of 7 are: 1, 7The factors of 41 are: 1, 41The common factor is: 1
The only common factor of 41 and 462 is 1.
The GCF is 1.
The answer is 20x21=420 and 20+21=41
The common factors of 21 and 51 are: 1 and 3
The factors of 82 are 1, 2, 41, and 82. The factors of 84 are 1, 2, 4, 6, 7, 12, 14, 21, 42, and 84. The factors they have in common are 1 and 2.
The common factors of 21 42 and 84 are 21
The common factors of 21 and 63 are 1, 3, 7, and 21
The factors of 21 are 1,3,7, and 21. The factors of 70 are 1,2,5,7,14,35, and 70 The common factors of 21 and 70 are 1 and 7.
The factors of 21 are 1, 3, 7 and 21. For them to be common, they need to be compared to another set of factors.
The common factors of 30 and 21 are 1 and 3.
The common factors of 6 and 21 are 1 and 3.