21. Its factors are 1, 3, 7 and 21 which add to 32.
A prime number has exactly two factors, 1 and the number itself.
Yes. Square numbers have an odd number of factors. 49 has three factors.
Square numbers have an odd number of factors.
All odd numbers have odd factors.
Odd.
Square numbers have an odd number of factors.
A prime number has exactly two factors, 1 and the number itself.
a # that has exactly 2 factors is called a prime number, an example of a prime number is 17 because it is odd and it only has 2 factors, 17= 1 and itself
105
27
105 is one such number.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
3*5*7*9 = 945 ...check if any number less than that has exactly four distinct 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.
Yes. Square numbers have an odd number of factors. 49 has three factors.
Yes, quare numbers have an odd number of factors.