Prime Factorization:
20 = 2 * 2 * 5
30 = 2 * 3 * 5
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The prime factorization of 20 is: 2 × 2 × 5
2*2*5 = 20
8 is not a prime factor of 30. The prime factorization of 30 is 2x3x5.
30
The prime factorization of 12 is: 2 X 2 X 3 The prime factorization of 18 is: 2 X 3 X 3 The prime factorization of 20 is: 2 X 2 X 5