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The greatest common factor (GCF) of 16 and 63 is 1.
The GCF is 1.
The GCF is 21.
The GCF is 63.
The GCF is 3.
The GCF is 9.
The LCM is 25200 The GCF is 1.
1 and 25,200 respectively.
The GCF is: 63
The GCF is 7.