Q: What is the sum of all factors of the number 21,012,021 excluding 21,012,021?

 A: 10,116,939

Why is 10,116,939 the sum of all factors of 21,012,021, excluding 21,012,021?

The factors of the number 21,012,021 are: 1, 3, 9, 27, 778223, 2334669, 7004007, 21012021.

If you add them up, you will get the total of 21,012,031. Now subtract 21,012,021 to get 10,116,939


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