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The GCF of 21 and 447 is 3.
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Find HCF of: 42 & 894 63 & 1341 7 & 149 105 & 2235 147 & 3129 42 & 447 21 & 894 63 & 447 21 & 1341 105 & 447 21 & 2235 147 & 447 21 & 3129
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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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