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A square number has an odd number of factors, but a number with an odd number of factor pairs is nothing special.

Q: What is a number called that has an odd number of factor pairs?

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L

2 cannot be a factor of an odd number, 2 must be a factor of an even number.

You cannot do this, because you're taking odd numbers: if you add two odd numbers together, you will get an even number. Take the odd numbers in pairs, so you'll have 3 pairs plus an extra odd number. The 3 pairs make 3 even numbers. You can add up any number of even numbers and get an even number, so you will have an even + odd, which is odd. 30 is an even number, but your result will be odd, no matter what 7 odd numbers you choose.

3 is a factor of 24 that is an odd number bigger than 1

2 is a factor of every even number. Adding or subtracting one from an even number leaves an odd number. Since even and odd numbers alternate, 2 will be a factor of every other number.

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L

Factors can be listed as factor pairs. With square numbers, one of those pairs will be the same number twice. When written as a list, only one of them will be used, leaving an odd number of factors.

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.

The factor pairs of 429 (all odd numbers) are (429,1)(143,3)(39,11)(33,13)

5 is an odd number and is a factor of 100

Odd.

All odd numbers have odd factors.

An odd factor is a number that cannot be divided by 2. if it can be divided by 2 it is an even factor or even number.

25 is an odd factor of 100.

All nonzero numbers have factors. Some factors are odd numbers. The largest of these would be the greatest odd factor. Of course, the greatest odd factor of any odd number is the number itself.

An odd number can't have 12 as a factor. 528 does have 12 as a factor.

no