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The greatest common factor (GCF) of two numbers is the largest positive integer that divides both numbers without leaving a remainder. The GCF of 20 and 64 is 4, as both numbers can be evenly divided by 4. When you add 20 and 64 together, you get 84.

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GCF = 4, sum = 84.

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Wiki User

7y ago
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4(5 + 16)

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Wiki User

7y ago
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Q: What is the Gcf and sum of 20 plus 64?
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