A square number.
Square numbers have an odd number of factors.
A square number
A perfect square has an odd number of factors.
Both odd and even numbers may have odd numbers as factors.
Since any odd number can be a factor, there is an infinite amount of them.
A perfect square.
A perfect square.
A square number.
A perfect square
Square numbers have odd numbers of factors. Examples: 4, 9, 16
Square numbers have an odd number of factors.
A perfect square