2, 4, 6, 10, 12, 20, 30, 60 add up to 144.
Sum of even factors of a number will always equal an even number.
2 is the only even Prime number. All even numbers (numbers ending in 0, 2, 4, 6, or 8) have 2 as a factor.
The sum of the factors of any negative number is zero.
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.
If you compare 36 to any other even number, they will have at least 1 and 2 in common.
The factors of 49 are 1, 7, and 49. When you add them together you get 57, which is the sum.
All nonzero numbers have factors. Some factors are even numbers, some factors are odd numbers.
39 is a composite number whose proper factors add up to 16.
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
The sum of the positive whole-number factors of 30 is 72.
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.
You're referring to an Abundant Number(unlike a Perfect Number, which is equal to the sum of its factors).
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.
64
The sum of an odd number and an even number is an odd number.
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.
Two odd numbers always sum to an even number. Always. Two even numbers always sum to an even number, and an odd number and an even number always sum to an odd number.
To tackle this question, you first need to break the number down into its prime factors. In this case we have 64 = 2x2x2x2x2x2 To find the greater factors, you need to multiply any combination of these. That gives us the factors as 2, 4, 8, 16, 32 and 64 Adding these up for the sum gives us 126 Thus the sum of all even factors of 64 is 126.