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| 1020: | 2 | 2 | 3 | 5 | 17 | |
| 780: | 2 | 2 | 3 | 5 | 13 | |
| GCF: | 2 | 2 | 3 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 3 x 5 = 60
| Greatest Common Factor (GCF) of 1240 and 392 | | Greatest Common Factor (GCF) of 180 and 546 | | Greatest Common Factor (GCF) of 190 and 250 | | Greatest Common Factor (GCF) of 1996 and 156 | | Greatest Common Factor (GCF) of 1325 and 3484 | | Greatest Common Factor (GCF) of 408 and 22 | | Greatest Common Factor (GCF) of 0.36 and 121 | | Greatest Common Factor (GCF) of 324 and 668 | | Greatest Common Factor (GCF) of 149 and 335 | | Greatest Common Factor (GCF) of 517 and 663 | | Greatest Common Factor (GCF) of 157 and 219 | | Greatest Common Factor (GCF) of 349 and 100 | | Greatest Common Factor (GCF) of 187 and 126 | | Greatest Common Factor (GCF) of 16 and 792 | | Greatest Common Factor (GCF) of 825 and 264 | | Greatest Common Factor (GCF) of 17 and 875 | | Greatest Common Factor (GCF) of 517 and 500 | | Greatest Common Factor (GCF) of 21 and 497 | | Greatest Common Factor (GCF) of 59500 and 87500 | | Greatest Common Factor (GCF) of 232 and 126 | | Greatest Common Factor (GCF) of 96 and 968 | | Greatest Common Factor (GCF) of 8500 and 12500 | | Greatest Common Factor (GCF) of 3248 and 1 | | Greatest Common Factor (GCF) of 72 and 1944 | | Greatest Common Factor (GCF) of 561 and 325 | | Greatest Common Factor (GCF) of 400 and 351 | | Greatest Common Factor (GCF) of 4765 and 12234 | | Greatest Common Factor (GCF) of 429 and 351 | | Greatest Common Factor (GCF) of 1 and 294 | | Greatest Common Factor (GCF) of 325 and 78 | | Greatest Common Factor (GCF) of 124 and 69 | | Greatest Common Factor (GCF) of 1000 and 694 |