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The GCF of 20 and 87 is 1.
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Find HCF of: 40 & 174 60 & 261 100 & 435 140 & 609 40 & 87 20 & 174 60 & 87 20 & 261 100 & 87 20 & 435 140 & 87 20 & 609
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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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