The GCF is 9.
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The GCF is 27.
The GCF is 27. The LCM is 81.
Greatest Common Factor (GCF) of (4,81) is 1.
The Greatest Common Factor (GCF) is: 9
The Greatest Common Divisor of two numbers is the largest number that will divide into both evenly. For example, although 27 and 81 are both divisible by 3, it wouldn't be the greatest common divisor, because 27 divides into 81 evenly as well: the greatest common divisor of 27 and 81 is 27.