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| 1240: | 2 | 2 | 2 | 5 | 31 | |
| 920: | 2 | 2 | 2 | 5 | 23 | |
| GCF: | 2 | 2 | 2 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 2 x 5 = 40
| Greatest Common Factor (GCF) of 255000 and 205000 | | Greatest Common Factor (GCF) of 43560 and 440 | | Greatest Common Factor (GCF) of 1236 and 2015 | | Greatest Common Factor (GCF) of 2772 and 280 | | Greatest Common Factor (GCF) of 89 and 224 | | Greatest Common Factor (GCF) of 765 and 2 | | Greatest Common Factor (GCF) of 6002 and 15690 | | Greatest Common Factor (GCF) of 1845 and 64 | | Greatest Common Factor (GCF) of 1274 and 959 | | Greatest Common Factor (GCF) of 70900 and 253900 | | Greatest Common Factor (GCF) of 1266 and 240 | | Greatest Common Factor (GCF) of 994 and 298 | | Greatest Common Factor (GCF) of 1020 and 960 | | Greatest Common Factor (GCF) of 132 and 141 | | Greatest Common Factor (GCF) of 992 and 550 | | Greatest Common Factor (GCF) of 640 and 555 | | Greatest Common Factor (GCF) of 1440 and 112 | | Greatest Common Factor (GCF) of 620 and 1300 | | Greatest Common Factor (GCF) of 1530 and 1514 | | Greatest Common Factor (GCF) of 3972 and 2496 | | Greatest Common Factor (GCF) of 369 and 28 | | Greatest Common Factor (GCF) of 1155 and 1260 | | Greatest Common Factor (GCF) of 792 and 440 | | Greatest Common Factor (GCF) of 896 and 1348 | | Greatest Common Factor (GCF) of 73546 and 3369 | | Greatest Common Factor (GCF) of 2100 and 255 | | Greatest Common Factor (GCF) of 11 and 251 | | Greatest Common Factor (GCF) of 28 and 546 | | Greatest Common Factor (GCF) of 2640 and 1095 | | Greatest Common Factor (GCF) of 3338 and 100000 | | Greatest Common Factor (GCF) of 319 and 45 | | Greatest Common Factor (GCF) of 1818 and 2273 |