450 or 900
1
9 has three factors: 1, 3, and 9
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
101 is the first three-digit prime number.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
The largest one digit number that has three factors is 9. Its factors are 1, 3, and 9.
Any three-digit multiple of 60, from 120 to 960, has the first five counting numbers as factors.
150 has only three prime factors: 2, 3 and 5.
9 isn't prime, but one three-digit multiple of 18 is 108.
149 of them.
120, 150, 180