The prime factorization for 72 is in the following
2.2.2.3.3=72
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The prime factorization of 72 is: 2 × 2 × 2 × 3 × 3.
72 = 23 x 32
49 = 72
Use a factor tree. 72 36,2 18,2,2 9,2,2,2 3,3,2,2,2
588 = 22 x 3 x 72