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1, 2, 4

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# The method is to find all of the factors of each, and then select the numbers that appear in each list. # Another method to find the common factors of numbers is to find the prime factorizations of each one, select all matching prime factors, and then combine them.

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15y ago
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12y ago

It is 1,2,4. Because if you list them out the factors of 16 are 1,2,4,8,16. Then the factors of 4 are 1,2, and 4. so that's how i got the common factors.

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Q: What are the common factors of 16 and 4?
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