Square numbers.
They are square numbers.
square numbers
Yes.
Yes, the factors of all odd numbers are odd numbers.
Square numbers have odd numbers of factors.
50
Both odd and even numbers may have odd numbers as factors.
4, 9, 16 and 25 are square numbers.
Yes. Square numbers have an odd number of factors. 49 has three factors.
Perfect squares have an odd number of factors.
Square numbers have an odd number of factors.
Some even numbers have more factors than some odd numbers and some odd numbers have more factors than some even numbers. As a group, even numbers have more factors than odd numbers.