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| 680: | 2 | 2 | 2 | 5 | 17 |
| 40: | 2 | 2 | 2 | 5 | |
| GCF: | 2 | 2 | 2 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 2 x 5 = 40
| Greatest Common Factor (GCF) of 84 and 234 | | Greatest Common Factor (GCF) of 154 and 308 | | Greatest Common Factor (GCF) of 46 and 180 | | Greatest Common Factor (GCF) of 85 and 136 | | Greatest Common Factor (GCF) of 136 and 68 | | Greatest Common Factor (GCF) of 136 and 85 | | Greatest Common Factor (GCF) of 16 and 47 | | Greatest Common Factor (GCF) of 245 and 385 | | Greatest Common Factor (GCF) of 98 and 6 | | Greatest Common Factor (GCF) of 165 and 9 | | Greatest Common Factor (GCF) of 19 and 59 | | Greatest Common Factor (GCF) of 32 and 21 | | Greatest Common Factor (GCF) of 33 and 132 | | Greatest Common Factor (GCF) of 13 and 85 | | Greatest Common Factor (GCF) of 35 and 95 | | Greatest Common Factor (GCF) of 16 and 188 | | Greatest Common Factor (GCF) of 138 and 180 | | Greatest Common Factor (GCF) of 39 and 144 | | Greatest Common Factor (GCF) of 27 and 160 | | Greatest Common Factor (GCF) of 114 and 86 | | Greatest Common Factor (GCF) of 108 and 200 | | Greatest Common Factor (GCF) of 125 and 40 | | Greatest Common Factor (GCF) of 51 and 125 | | Greatest Common Factor (GCF) of 490 and 180 | | Greatest Common Factor (GCF) of 60 and 248 | | Greatest Common Factor (GCF) of 60 and 243 | | Greatest Common Factor (GCF) of 172 and 50 | | Greatest Common Factor (GCF) of 92 and 49 | | Greatest Common Factor (GCF) of 1440 and 280 | | Greatest Common Factor (GCF) of 100 and 500 | | Greatest Common Factor (GCF) of 27 and 154 | | Greatest Common Factor (GCF) of 28 and 147 |