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The GCF of 21 and 390 is 3.
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Find HCF of: 42 & 780 63 & 1170 7 & 130 105 & 1950 147 & 2730 42 & 390 21 & 780 63 & 390 21 & 1170 105 & 390 21 & 1950 147 & 390 21 & 2730
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).
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