No. For example:
3 is a factor of 9, 15, 21, ...
3 is not a factor of 5, 7, 11, 13, 17, 19, ...
Note that there are lots of odd numbers that have NO smaller factors (excluding 1, and negative factors, of course). Such numbers are called prime numbers. The sequence of prime numbers starts with:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, ...
All odd numbers have odd factors.
25 is an odd factor of 100.
An odd number
you get an odd number
The result is an odd number.
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.
of course not. How about 5,7,11,13,17,.....?
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.
It's easy to see whether 2 is a factor of a number because 2 is a factor of every even number and not a factor of any odd number.
Every integer number has an odd factor unless it doesn't, i.e. unless it only has even factors. An even factor can have an odd factor, unless it has only factors 2 (since it is the only even prime).So, a number has an odd factor if it is unequal to a power of 2.Note that 0 is not a power of 2 and has all odd factors . . .
5 is an odd number and is a factor of 100
A square number has an odd number of factors, but a number with an odd number of factor pairs is nothing special.
No. 1 is odd, and is a factor of every number.
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.
No. Seven is odd, for example, and does not have three as a factor.