45 x 2
30 x 3
18 x 5
15 x 6
10 x 9
2 x 3 x 3 x 5
2 x 3 x 15
2 x 5 x 9
3 x 3 x 10
3 x 5 x 16
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The greatest common factor of 630 , 84 = 42
It is: 28 which is the greatest common factor of 56 and 84
Since 7 is a factor of 84, it is automatically the GCF.
7,3,2,2 21,2,2 42,2 84
No.