The Greatest Common Factor (GCF) is: 7
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The GCF is 7.
The factors of 21 and 1,3,7, and 21Now since 21 is not a factor of 49, but 7 is we can say right away the GCF is 7.
what is the greatest common factor of 28 49 and 105
The GCF is 7.
The GCF is 7.