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The GCF of 21 and 3969 is 21.
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Find HCF of: 42 & 7938 7 & 1323 3 & 567 42 & 3969 21 & 7938 63 & 3969 105 & 3969 147 & 3969
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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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