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| 72: | 2 | 2 | 2 | 3 | 3 | |
| 20: | 2 | 2 | 5 | |||
| GCF: | 2 | 2 |
The Greates Common Factor (GCF) is: 2 x 2 = 4
| Greatest Common Factor (GCF) of 21 and 78 | | Greatest Common Factor (GCF) of 72 and 80 | | Greatest Common Factor (GCF) of 84 and 10 | | Greatest Common Factor (GCF) of 14 and 45 | | Greatest Common Factor (GCF) of 72 and 3 | | Greatest Common Factor (GCF) of 45 and 10 | | Greatest Common Factor (GCF) of 66 and 33 | | Greatest Common Factor (GCF) of 95 and 57 | | Greatest Common Factor (GCF) of 73 and 28 | | Greatest Common Factor (GCF) of 100 and 250 | | Greatest Common Factor (GCF) of 44 and 96 | | Greatest Common Factor (GCF) of 48 and 144 | | Greatest Common Factor (GCF) of 12 and 76 | | Greatest Common Factor (GCF) of 16 and 140 | | Greatest Common Factor (GCF) of 32 and 51 | | Greatest Common Factor (GCF) of 16 and 80 | | Greatest Common Factor (GCF) of 10 and 14 | | Greatest Common Factor (GCF) of 12 and 2 | | Greatest Common Factor (GCF) of 4 and 14 | | Greatest Common Factor (GCF) of 1 and 15 | | Greatest Common Factor (GCF) of 16 and 2 | | Greatest Common Factor (GCF) of 45 and 3 | | Greatest Common Factor (GCF) of 15 and 3 | | Greatest Common Factor (GCF) of 46 and 8 | | Greatest Common Factor (GCF) of 562 and 28 | | Greatest Common Factor (GCF) of 568 and 28 | | Greatest Common Factor (GCF) of 12 and 80 | | Greatest Common Factor (GCF) of 34500 and 6100 | | Greatest Common Factor (GCF) of 65 and 300 | | Greatest Common Factor (GCF) of 36 and 27 | | Greatest Common Factor (GCF) of 36 and 30 | | Greatest Common Factor (GCF) of 20 and 125 |