The factors of 42 are:
1, 2, 3, 6, 7, 14, 21, 42
The factors of 189 are:
1, 3, 7, 9, 21, 27, 63, 189
The factors of 441 are:
1, 3, 7, 9, 21, 49, 63, 147, 441
The common factors are:
1, 3, 7, 21
The Greatest Common Factor:
GCF = 21
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A single number cannot have a greatest common factor because "common" refers to factors that two or more numbers have in common. You have only one, which is 189.
GCF(189, 441, 63) = 21.
The GCF is: 63
The GCF is 63.
greatest common factor of 188 441 and 63 is 1.
The greatest common factor of the numbers '420' and '2646' is '42'.