Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
No. Perfect square numbers have an odd number of factors.
Square numbers have an odd number of factors.
All square numbers have an odd number of factors.
Prime numbers have two factors. Prime squares have three factors. Square numbers have an odd number of factors but that number varies.
Yes. Square numbers have an odd number of factors. 49 has three factors.
Even powers of prime numbers. Square numbers have an odd number of factors.
There is no limit to the number of factors.