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| 21: | 3 | 7 | |
| 39: | 3 | 13 | |
| GCF: | 3 |
The Greates Common Factor (GCF) is: 3
| Greatest Common Factor (GCF) of 174 and 522 | | Greatest Common Factor (GCF) of 42 and 252 | | Greatest Common Factor (GCF) of 78 and 246 | | Greatest Common Factor (GCF) of 121 and 275 | | Greatest Common Factor (GCF) of 15 and 115 | | Greatest Common Factor (GCF) of 30 and 115 | | Greatest Common Factor (GCF) of 39 and 117 | | Greatest Common Factor (GCF) of 70 and 115 | | Greatest Common Factor (GCF) of 72 and 117 | | Greatest Common Factor (GCF) of 48 and 94 | | Greatest Common Factor (GCF) of 441 and 143 | | Greatest Common Factor (GCF) of 120 and 90 | | Greatest Common Factor (GCF) of 45 and 135 | | Greatest Common Factor (GCF) of 30 and 135 | | Greatest Common Factor (GCF) of 225 and 150 | | Greatest Common Factor (GCF) of 25 and 65 | | Greatest Common Factor (GCF) of 7 and 98 | | Greatest Common Factor (GCF) of 58 and 33 | | Greatest Common Factor (GCF) of 189 and 2002 | | Greatest Common Factor (GCF) of 68 and 78 | | Greatest Common Factor (GCF) of 360 and 400 | | Greatest Common Factor (GCF) of 96 and 38 | | Greatest Common Factor (GCF) of 34 and 93 | | Greatest Common Factor (GCF) of 33 and 65 | | Greatest Common Factor (GCF) of 12 and 112 | | Greatest Common Factor (GCF) of 240 and 210 | | Greatest Common Factor (GCF) of 210 and 150 | | Greatest Common Factor (GCF) of 0.058 and 100 | | Greatest Common Factor (GCF) of 7200 and 100 | | Greatest Common Factor (GCF) of 148 and 84 | | Greatest Common Factor (GCF) of 64 and 44 | | Greatest Common Factor (GCF) of 35 and 72 |