60, 72, 84, 90, and 96 each have 12 factors.
All of the odd numbers in that range can be factors.
The prime numbers (factors) of 99 are: 3 and 11
The numbers divisible by both 3 and 4 are multiples of 12, thus between 10 and 99: 12, 24, 36, 48, 60, 72, 84, 96 are the numbers divisible by both 3 and 4.
There are a total of 33 numbers - starting with 12, and ending with 99.
The factors of 99 are: 1, 3, 9, 11, 33, 99. The factors of 33 are: 1, 3, 11, 33.
There are 49 even numbers between 1 and 99.
Factors of 55 are: 1, 5, 11, and 55 Factors of 99 are: 1, 3, 9, 11, 33, and 99 "Common" factors are numbers that are factors of both. Common factors of 55 and 99 are: 1 and 11 .
That's an infinite list. If you restrict it to integers, then count by ones from 12 to 98.
The factors of 25 are 1, 5 and 25. None of them are between 99 and 251.
As a product of its prime factors: 3*3*11 = 99
99
The factors of 66 are 1, 2, 3, 6, 11, 22, 33, and 66 .The factors of 99 are 1, 3, 9, 11, 33, and 99 .The common factors of 66 and 99 ... numbers that are factors of both of them ... are 1, 3, and 11 .