Any number of the form a*b^4 where a and b are different prime numbers, or c^9 where c is a prime, will have exactly 10 factors.
A number that has exactly an odd number of factors is a power of another number. A number between 10 and 30 that is a power is 16. It is 24 (as well as 42) and its factors are 1, 2, 4, 8, and 16.
A prime number has exactly two factors.
The smallest number with exactly eight factors is 24.
The smallest number that has exactly eight factors is 24. The factors of 1,2,3,4,6,8,12, and 24
A number has exactly three factors if and only if it is the square of a prime number.
Well, If we looked at this way: (224) = 16777216, so this number has exactly 24 factors. (324) = 282429536481, so this number has exactly 24 factors. (510)(210)(34) = 810000000000, so this number has exactly 24 factors.
no because every number is multiplied by 1 and it equals the same as the number...yay:D