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Anonymous
21 = 3 x 7
85 = 5 x 17
63 = 32 x 7
46 = 2 x 23
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32 x 7 = 63
The prime factorization of 63 is 3 x 3 x 7.
63 = 3 * 3 * 7
The factors of 63 are: 1 3 7 9 21 63. The prime factors are: 3 and 7