The factors of 768 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, and 768. The prime factors of 768 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3.
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512 = 29 or 768 = 28*3 have 9 prime factors each.
Using prime factorization, there are 2 three digit numbers with 9 factors: 512 and 768. There are no three digit numbers with 10 or more prime factors. 512=2^9 and 768=3*2^8
768 = 28 x 31
The factors of 1536 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, and 1536. The prime factors are 28x3.
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