It is not possible to give a sensible answer to this question. 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!
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You need at least two numbers to find a GCF. There's nothing "common" about a single item. There are no "common" factors until you have at least two numbers.
"Common" means "same for both". There can't be any 'common' factors
until you have at least two numbers.
The Greatest Common Factor of 108, 180, 75 is 3.
The Greatest Common Factor (GCF) is: 20
The greatest common factor (GCF) is: 18
The Greatest Common Factor (GCF) is: 36
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