30,2
15,2,2
5,3,2,2
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20 10,2 5,2,2 60 30,2 15,2,2 5,3,2,2
Factor tree of 40: 40 20,2 10,2,2 5,2,2,2
The least common factor of 56 and 60 is 1. The greatest common factor of 56 and 60 is 4.
Here is a factor tree of eight: 8 / \ 4 2 / \ 2 2
873 x 29Since both 3 and 29 are prime numbers, the factor tree is complete.