Sum of even factors of a number will always equal an even number.
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∙ 2010-06-29 03:16:41It is only possible to have one even prime factor of any number - as there is only one even prime number, 2. The sum of these is therefore 2.
The sum of the factors of any negative number is zero.
36
The number four.
Add them up.
It is only possible to have one even prime factor of any number - as there is only one even prime number, 2. The sum of these is therefore 2.
The sum of the factors of any negative number is zero.
No. Sum of odd + odd = even Sum of odd + even = odd Sum of even + even = even
39 is a composite number whose proper factors add up to 16.
36
The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.
The sum of the positive whole-number factors of 30 is 72.
The number four.
You're referring to an Abundant Number(unlike a Perfect Number, which is equal to the sum of its factors).
The sum of an odd number and an even number is an odd number.
Abundant is a number for which the sum of all its proper factors is greater than the number itself. Deficient is a number for which the sum of all its proper factors is less than the number itself. Perfect is a number for which the sum of all its proper factors is the number itself.
It doesn't have to be a prime number and an even number. The sum of any two whole numbers is a whole number. Also, the sum of two even numbers is an even number, the sum of two odd numbers is an even number, and the sum of an odd number and an even number is an odd number.