1,3,9
1,3,7,21
3 and 7 are prime.
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The factors of 18 are: 1 2 3 6 9 18 The prime factors are: 2 x 3 x 3 and The factors of 21 are: 1 3 7 21 The prime factors are: 3 x 7
The 6 factors of 63 are 1, 3, 7, 9, 21, and 63. The factor pairs of 63 are 1 x 63, 3 x 21, and 7 x 9. The proper factors of 63 are 1, 3, 7, 9, and 21; possibly not 1, depending on your definition. The prime factors of 63 are 3, 3, and 7. The 2 distinct prime factors of 63 are 3 and 7.
The prime factors of 21 are 3,7.
The factors of 693 are: 1 3 7 9 11 21 33 63 77 99 231 693. The prime factors are: 3,7,11
1 3 7 9 21 63 Do something dont copy suckers