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Q: What is the sum of all the factors of 21?
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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 are 4 factors of 60 if you add them together you get a number greater than 20 but less than 35?

There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.


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