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| 420: | 2 | 2 | 3 | 5 | 7 | ||
| 240: | 2 | 2 | 2 | 2 | 3 | 5 | |
| GCF: | 2 | 2 | 3 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 3 x 5 = 60
| Greatest Common Factor (GCF) of 820 and 74 | | Greatest Common Factor (GCF) of 4928 and 438 | | Greatest Common Factor (GCF) of 60 and 720 | | Greatest Common Factor (GCF) of 512 and 898 | | Greatest Common Factor (GCF) of 360 and 94 | | Greatest Common Factor (GCF) of 5 and 5625 | | Greatest Common Factor (GCF) of 204 and 133 | | Greatest Common Factor (GCF) of 825 and 2385 | | Greatest Common Factor (GCF) of 1183 and 539 | | Greatest Common Factor (GCF) of 123 and 38 | | Greatest Common Factor (GCF) of 40 and 195 | | Greatest Common Factor (GCF) of 880 and 38 | | Greatest Common Factor (GCF) of 1212 and 21 | | Greatest Common Factor (GCF) of 268 and 1024 | | Greatest Common Factor (GCF) of 72 and 151 | | Greatest Common Factor (GCF) of 235 and 63 | | Greatest Common Factor (GCF) of 234 and 211 | | Greatest Common Factor (GCF) of 427 and 217 | | Greatest Common Factor (GCF) of 672 and 612 | | Greatest Common Factor (GCF) of 246 and 302 | | Greatest Common Factor (GCF) of 5054 and 1254 | | Greatest Common Factor (GCF) of 180 and 68 | | Greatest Common Factor (GCF) of 492 and 604 | | Greatest Common Factor (GCF) of 1620 and 17 | | Greatest Common Factor (GCF) of 306 and 1254 | | Greatest Common Factor (GCF) of 1938 and 1785 | | Greatest Common Factor (GCF) of 1274 and 1870 | | Greatest Common Factor (GCF) of 1620 and 1620 | | Greatest Common Factor (GCF) of 645 and 1485 | | Greatest Common Factor (GCF) of 3912 and 6000 | | Greatest Common Factor (GCF) of 3003 and 54 | | Greatest Common Factor (GCF) of 560 and 720 |