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The GCF of 21 and 1644 is 3.
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Find HCF of: 42 & 3288 63 & 4932 7 & 548 105 & 8220 42 & 1644 21 & 3288 63 & 1644 21 & 4932 105 & 1644 21 & 8220 147 & 1644
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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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