If it's an even number, two is a factor of it.
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Numbers which are prime factor of 44 are 2 and 11.
You factor out both numbers 154 = 2*11*7198 = 2*11*9Now look and see which factors the numbers share. (2 and 11)Multiply the factors (2*11 = 22)22 is the gcf or greatest common factor
22 2 x 11 Both 2 and 11 are prime numbers, so the factor tree is finished.
As a product of its prime factors: 2*11 = 22. The other factor pair is 1*22.
44 2*22 2*2*11