A square number or a perfect square.
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∙ 2016-03-29 14:23:56Square numbers
Square numbers have an odd number of factors.
Yes. Square numbers have an odd number of factors. 49 has three 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.
Square numbers have odd numbers of factors.
Square numbers have odd numbers of factors.
Square numbers have an odd number of factors.
Perfect squares have an odd number of factors.
Both odd and even numbers may have odd numbers as factors.