Q: What is the sum of all factors of the number 21,453,213 excluding 21,453,213?

 A: 7,172,515

Why is 7,172,515 the sum of all factors of 21,453,213, excluding 21,453,213?

The factors of the number 21,453,213 are: 1, 3, 2503, 2857, 7509, 8571, 7151071, 21453213.

If you add them up, you will get the total of 21,453,220. Now subtract 21,453,213 to get 7,172,515


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