No numbers between 1 and 100 have exactly eleven factors. 60, 72, 84, 90 and 96 each have twelve factors.
25
6 and 8. 4 is a square, which can be considered as a special case of a rectangle.
There are three of them with exactly five factors.
Three numbers.
Squares of prime numbers have only three factors.
There is an infinite number of ways three numbers can have the sum of 11
nine, ten and eleven. Three consecutive numbers that total thirty
Composite numbers
Numbers with exactly three factors are squares of prime numbers.
Factors don't have numbers. Numbers have factors. Numbers that have the factors 2, 4 and 8 are 8 and all of its multiples.
The numbers with only three factors are squares of prime numbers.
Squares of prime numbers have exactly three factors.