Sum of even factors of a number will always equal an even number.
2 is an even number with only 2 factors.
12 is an even number and it is also a composite number because it has more than two factors
16 is a number that has four identical even factors.
No, square numbers have an odd number of factors.
Every even number has odd and even factors.
Square numbers have an odd number of factors, all others have an even number. In this context, primes can either be considered as having 0 factors (an even number) or 2 factors - 1 and itself, again, an even number.
Every one of them has an even number of factors.
An even power. Square numbers have an odd number of factors.