No, 4 is not a factor of 18.
The greatest common factor of 16, 24, and 18 is 2.
The GCF is: 2
The GCF of 16, 18, and 36 is 2.
The greatest common factor of the numbers 12, 16 and 18 is 2.
The GCF of 16, 18, and 8 is 2.
The GCF is 2.
The GCF is 2.
The GCF is 2.
The GCF is 2.
It is: 2
The greatest common factor is 18.