I did it by listing all of the factors of all the numbers from 1 to 100.
60, 72, 84, 90 and 96 each have twelve factors.
48 has 10 factors, the most factors of any number under 50.
24
12
There is no such number. You can always find a number that has yet more factors.
48 has ten factors.
180 has 18 factors.
the number 90 has the most factors under 100
12 does.
83,160
"12" has 6 factors.
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 and 18 each have six factors.