The GCF is 42.
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The greatest common factor of the numbers 210 and 84 is 42.
The GCF is 14.
210 and 420 have a GCF of 210.
If that's 28, 56 and 84, the GCF is 28. If that's 2856 and 84, the GCF is 84.
The GCF is 6. The greatest common factor is the highest number that divides exactly into two or more numbers. 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 The GCF for 84 and 90 is 6.