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Earn +20 ptsQ: What is the sum of all the factors of 21?
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What is the sum of all the positive integer factors of 12?
The sum of all the positive factors of 12 is 28.
What is the sum of all the factors of 30?
The sum of the positive whole-number factors of 30 is 72.
Is the number 18 abundant?
An Abundant Number is one that the factors (other than itself) add up to more than the number. 18 factors into [2 3 3] so the factor list is {1 2 3 6 9 18} and the sum of the rest is 21. Since 21 is greater than 18, it is an abundant number.Yes 18 is an abundant number because if you add all of it's factors (1,2,3,6,9,) together the sum is 21.Definition of Abundant- a number that is less the sum of it's factors or integers
What is the sum all two digit factors of 100?
105 is the sum
What are two composite numbers that each have prime factors with the sum of 10?
21 and 32
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