All odd numbers have odd factors.
Because 55 is an odd number. All the factors of odd numbers are odd.
All square numbers have an odd number of factors.
Yes. If a number ends in an odd number, as in 75, any factors cannot be even
15 does.
45
All nonzero numbers have factors. Some factors are even numbers, some factors are odd numbers.
Square numbers have an odd number of factors.
Square numbers have an odd number of factors.
All nonzero numbers have factors. Some factors are odd numbers. 3 is an odd factor of 12.
No. Perfect square numbers have an odd number of factors.
Yes. Square numbers have an odd number of factors. 49 has three factors.