A single number cannot have a common factor. This is because the word common means shared. So in order for it to be shared it must be shared by 2 or more numbers.
So we could talk about the common factors of 88 and any other number.
The highest common factor of the numbers 88 and 66 is 22.
The greatest common factor of 38 , 88 = 2
The greatest common factor of 55 and 88 is 11.
The greatest common factor of 88 and 72 is 8.
22 is the greatest common factor for 88 and 110.
The highest common factor of the numbers 33 and 88 is 11.
The greatest common factor of 77 and 88 is 11, and it is also the greatest prime factor.
It is: 88
The greatest common factor of 88 110 and 143 is 11.
The greatest common factor of 73 and 88 is 1.
The greatest common factor of 88 , 44 , 66 = 22
The highest common factor of 48 and 88 is 8.