9 is the greatest common factor of 18, 45 and 54.
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The greatest common factor of 18 and 45 is 9.
The GCF is 9.
The greatest common factor of 45 and 225 is 15.The GCF is: 45
The greatest common factor of 26 and 45 is 1.
The greatest common factor of 90 , 30 , 45 = 15