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.
Four numbers less than thirty, 12, 18, 20, and 28, each have exactly 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
12 and 24
6, 12 and 18