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It is called a perfect number.

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Q: What is a number where its factors add up to itself called?

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You calculate proper divisors by finding the factors of a number and excluding the number itself. If you want to add them all, just add all the factors except the number together.

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A perfect number is an integer, the sum of whose integral factors, including 1, but excluding itself, is equal to itself. In other words, when the sum of a number's proper factors equals itself, it is called a perfect number. That means that if you add all of any given number's factors (including 1, but not itself), you get that number. 6 Factors: 1, 2, 3, 6 Sum of factors less than itself: 1 + 2 + 3 = 6 28 Factors: 1, 2, 4, 7, 14, 28 Sum of factors less than itself: 1 + 2 + 4 + 7 + 14 = 28

8128 They're known as perfect numbers.

Yes 15 is a deficient number because its factors add upp to less than the number itself,which is 15.

Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)

That means that the sum of the number's factors, less than the number itself, is less than the number in question - in this case, if you add the factors of 15 (except 15 itself, which is also a factor of 15), you get a total that is less than 15.

no it is not beacuse if u add all its factor which r 1,2,19 u get 22 and a perfect number has to be wgen u add up all the factors u get the number itself...

The prime factors of 51 are 3 and 17. Once you add itself and one, you have all the factors. (1,3,17,51)

Because all of its factors also known as 13 and 1 add up to be more than the number itself 13.

No. The factors of 10 other than 10 itself are 1, 2, and 5. These add up to 8, not 10.

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