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| 640: | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | |
| 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 86 and 155 | | Greatest Common Factor (GCF) of 18 and 172 | | Greatest Common Factor (GCF) of 760 and 440 | | Greatest Common Factor (GCF) of 847 and 567 | | Greatest Common Factor (GCF) of 230 and 611 | | Greatest Common Factor (GCF) of 187 and 524 | | Greatest Common Factor (GCF) of 323 and 329 | | Greatest Common Factor (GCF) of 178 and 183 | | Greatest Common Factor (GCF) of 1 and 0.01 | | Greatest Common Factor (GCF) of 92 and 1725 | | Greatest Common Factor (GCF) of 369242416 and 613089 | | Greatest Common Factor (GCF) of 613089 and 149612 | | Greatest Common Factor (GCF) of 228 and 53 | | Greatest Common Factor (GCF) of 800 and 2400 | | Greatest Common Factor (GCF) of 63 and 434 | | Greatest Common Factor (GCF) of 99 and 469 | | Greatest Common Factor (GCF) of 12 and 755 | | Greatest Common Factor (GCF) of 154 and 882 | | Greatest Common Factor (GCF) of 0.12 and 168 | | Greatest Common Factor (GCF) of 50 and 440 | | Greatest Common Factor (GCF) of 745 and 615 | | Greatest Common Factor (GCF) of 5 and 0.25 | | Greatest Common Factor (GCF) of 167 and 72 | | Greatest Common Factor (GCF) of 406 and 507 | | Greatest Common Factor (GCF) of 544546800 and 16500 | | Greatest Common Factor (GCF) of 127 and 300 | | Greatest Common Factor (GCF) of 145 and 136 | | Greatest Common Factor (GCF) of 2195 and 8 | | Greatest Common Factor (GCF) of 149 and 10 | | Greatest Common Factor (GCF) of 965 and 144 | | Greatest Common Factor (GCF) of 567 and 243 | | Greatest Common Factor (GCF) of 567 and 234 |