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The GCF of 21 and 1720 is 1.
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Find HCF of: 42 & 3440 63 & 5160 105 & 8600 42 & 1720 21 & 3440 63 & 1720 21 & 5160 105 & 1720 21 & 8600 147 & 1720
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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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