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Which number from ten to twenty has an odd number of factors?
Only perfect squares can have an odd number of factors. The answer is 16. It has five factors: 1,2,4,8,16.
Is the product of an odd number of factors always a negative number?
Only if an odd number of the factors are negative numbers.
Do only square numbers have an even number of factors?
No, only square numbers have an odd number of factors.
Is it only square numbers that have at odd number of factors?
Yes.
Odd number of factors?
Square numbers have an odd number of factors.
What kind of factors have an odd number of factors?
Square numbers have an odd number of factors.
Why does a square number always have an odd number of factors?
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.
What are the numbers that have an odd factor?
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 . . .
Is the gcf of an odd and even number always even?
No. The opposite is true: the gcf of an odd number and an even number is always odd. All the factors of an odd number are odd; or to put it another way: If a number has an even factor, the number itself must be even. Thus the only common factors between odd and even numbers must be odd.
Can a number have an odd number of factors?
Yes, quare numbers have an odd number of factors.
Can an odd number have odd numbers of factors?
Yes. Square numbers have an odd number of factors. 49 has three factors.
What type of number has an odd number of factors?
A perfect square has an odd number of factors. Factors of numbers always come in pairs -- except for perfect squares. Since the square root of a perfect square is listed only once on the list of factors, it results in a list with an odd number of factors.
