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| 400: | 2 | 2 | 2 | 2 | 5 | 5 | |
| 520: | 2 | 2 | 2 | 5 | 13 | ||
| GCF: | 2 | 2 | 2 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 2 x 5 = 40
| Greatest Common Factor (GCF) of 840 and 980 | | Greatest Common Factor (GCF) of 756 and 560 | | Greatest Common Factor (GCF) of 463 and 36 | | Greatest Common Factor (GCF) of 540 and 8400 | | Greatest Common Factor (GCF) of 7 and 943 | | Greatest Common Factor (GCF) of 30000 and 10000 | | Greatest Common Factor (GCF) of 655 and 100 | | Greatest Common Factor (GCF) of 1450 and 288 | | Greatest Common Factor (GCF) of 238 and 4 | | Greatest Common Factor (GCF) of 346 and 960 | | Greatest Common Factor (GCF) of 484 and 446 | | Greatest Common Factor (GCF) of 609 and 446 | | Greatest Common Factor (GCF) of 27 and 459 | | Greatest Common Factor (GCF) of 858033 and 10890 | | Greatest Common Factor (GCF) of 1163 and 5000 | | Greatest Common Factor (GCF) of 2326 and 10 | | Greatest Common Factor (GCF) of 680 and 1196 | | Greatest Common Factor (GCF) of 594 and 418 | | Greatest Common Factor (GCF) of 21294 and 195 | | Greatest Common Factor (GCF) of 89 and 243 | | Greatest Common Factor (GCF) of 11200 and 4000 | | Greatest Common Factor (GCF) of 154 and 623 | | Greatest Common Factor (GCF) of 67 and 844 | | Greatest Common Factor (GCF) of 1800 and 750 | | Greatest Common Factor (GCF) of 597 and 9 | | Greatest Common Factor (GCF) of 95 and 235 | | Greatest Common Factor (GCF) of 33 and 318 | | Greatest Common Factor (GCF) of 154 and 314 | | Greatest Common Factor (GCF) of 0.7 and 13 | | Greatest Common Factor (GCF) of 270 and 355 | | Greatest Common Factor (GCF) of 85 and 295 | | Greatest Common Factor (GCF) of 347 and 961 |