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you use prime factorization

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Q: How do you find out the common factors?
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What are the common factors of 1361224?

You need at least two numbers to find factors in common.


Find the common factors of 12 and 28?

The common factors are: 1, 2, 4


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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 factors in common for 72?

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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.


How do you find common factors of 649?

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What are the common factors of 108?

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What are the common factors of 207?

There cannot be a greatest 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.