A factor is a divisor - a number that will evenly divide into another number.
One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.
The factors of 21 are 1, 3, 7, and 21.
The factors of 27 are 1, 3, 9, and 27.
The common factors are 1 and 3.
This means that the greatest common factor is 3.
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3 is the greatest common factor of 21, 27, and 51The GCF is 3.
3
The GCF is 3.
The greatest common factor of 21 and 54 is 3. The greatest common factor is the highest number that divides exactly into two or more numbers. factors of 21: 1, 3, 7, 21 factors of 54: 1, 2, 3, 6, 9, 18, 27, 54 The greatest common factor of 21 and 54 is 3.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.