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| 21: | 3 | 7 | |||
| 56: | 2 | 2 | 2 | 7 | |
| GCF: | 7 |
The Greates Common Factor (GCF) is: 7
| Greatest Common Factor (GCF) of 36 and 54 | | Greatest Common Factor (GCF) of 64 and 25 | | Greatest Common Factor (GCF) of 220 and 2924 | | Greatest Common Factor (GCF) of 96 and 315 | | Greatest Common Factor (GCF) of 72 and 90 | | Greatest Common Factor (GCF) of 24 and 40 | | Greatest Common Factor (GCF) of 6 and 7 | | Greatest Common Factor (GCF) of 12 and 5 | | Greatest Common Factor (GCF) of 45 and 1875 | | Greatest Common Factor (GCF) of 20 and 88 | | Greatest Common Factor (GCF) of 28 and 88 | | Greatest Common Factor (GCF) of 18 and 32 | | Greatest Common Factor (GCF) of 156 and 140 | | Greatest Common Factor (GCF) of 80 and 96 | | Greatest Common Factor (GCF) of 160 and 26 | | Greatest Common Factor (GCF) of 4 and 30 | | Greatest Common Factor (GCF) of 4 and 81 | | Greatest Common Factor (GCF) of 15 and 36 | | Greatest Common Factor (GCF) of 13 and 12 | | Greatest Common Factor (GCF) of 20 and 21 | | Greatest Common Factor (GCF) of 21 and 15 | | Greatest Common Factor (GCF) of 24 and 14 | | Greatest Common Factor (GCF) of 24 and 8 | | Greatest Common Factor (GCF) of 9 and 16 | | Greatest Common Factor (GCF) of 23 and 10 | | Greatest Common Factor (GCF) of 147 and 98 | | Greatest Common Factor (GCF) of 144 and 80 | | Greatest Common Factor (GCF) of 34 and 36 | | Greatest Common Factor (GCF) of 16 and 4 | | Greatest Common Factor (GCF) of 36 and 72 | | Greatest Common Factor (GCF) of 40 and 10 | | Greatest Common Factor (GCF) of 99 and 260 |