To find the factors of a number you first need to break it down into its prime factors. In this case, 44 is even so you can divide by 2. Do this and you get 22, which is also even. Divide by 2 again and you get 11 which is prime. Thus the prime factors of 44 are 2, 2 and 11. In order to find all the factors (other than 1) you multiply any combination of these prime factors together. In this case, the factors of 44 work out as:
1, 2, 4, 11, 22 and 44.
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It can be. 44 is a proper factor of 88, among other numbers.
The GCF is 44.
Since 11 is a factor of 44, it is automatically the GCF.
The longest factor string of 44 is contained within the longest factor string of 132.
The greatest common factor for 44 and 66 is 22.