The factors of 210 are:
1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
The factors of 315 are:
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
The factors of 735 are:
1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735
The common factors are:
1, 3, 5, 7, 15, 21, 35, 105
The Greatest Common Factor (GCF) is:
105
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The gcf is 105
The GCF is 35.
Here are some multiples of both 15 and 7: 105, 210, 315, 420, 525, 630, 735, 840, 945.
315 = 32 x 5 x 7525 = 3 x 5 x 73 x 5 x 7 = 105 (GCF)
210 and 420 have a GCF of 210.