Because if you think about it, a square number has two factors that are the same. For example, look at the number 16. Its factors are 1, 2, 4, 8, and 16. 1 and 16 go together, 2 and 8 go together, and then 4 gets paired up with another 4.
Chat with our AI personalities
I would call an odd number factor a factor that is an odd number. I would call a number with an odd number of factors a perfect square.
A perfect square
Perfect squares are numbers with an odd number of factors.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors, but beyond that, any odd number can be a factor.