The most factors any odd number less than 100 has is 6. There are 4 numbers which have 6 factors:45, 63, 75 & 99.
"12" has 6 factors.
Note that 26x3=78. Next note that 78 divided by 6 is 13. This tells us 78 has 26 and 6 as factors and clearly it is less than 85.
-12 has twelve factors and is less than 100: -12,-6,-4,-3,-2,-1,1,2,3,4,6,12
42
78
78
That factors to (x - 6)(x + 3) x is less than or equal to -3, 6
6
Numbers with exactly 6 factors are perfect squares of prime numbers. The prime factorization of a number with exactly 6 factors is in the form ( p^2 ), where ( p ) is a prime number. There are 10 prime numbers less than 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. So, there are 10 numbers less than 30 that have exactly 6 factors.
12 and 24
6, 12 and 18