Q: What is the sum of all factors of the number 21,309 including 21,309?

 A: 28,416

Why is 28,416 the sum of all factors of 21,309, including 21,309?

The factors of the number 21,309 are: 1, 3, 7103, 21309.

If you add them up, you will get the total of 28,416.


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