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There cannot be a common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
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What are the common factors of 42 and 273?
The common factors of 42 and 273 are 1, 3, 7 and 21.
What are the common factors of 22 and 42?
The common factors of 22 and 42 are: 1 and 2
What are the common factors of 42 and 77?
The common factors of 42 and 77 are: 1 and 7
What are the common factors of 42 and 92?
The common factors of 42 and 92 are: 1 and 2
What are the common factors of 42 and 44?
The Common Factors of 42 and 44 are 1, 2
What are the common factors of 21 42 and 84?
The common factors of 21 42 and 84 are 21
Is 123 common factors of 42 and 44?
The common factors of 42 and 44 are 1 and 2.
What are the common factors of 42 and 56?
The common factors of 42 and 56 are 1,2,7 and 14
What are the common factors of 42 and 60?
The common factors of 42 and 60 are: 1, 2, 3, and 6
What are the common factors of 24 and 42?
The common factors of 24 and 42 are 1, 2, 3 and 6
What are the common factors of 6 and 42?
The common factors of 6 and 42 are: 1, 2, 3, and 6
What is common factors of 42 and 28?
Common factors of 42 and 28 are: 1, 2, 7, and 14.
