Q: What is the sum of all factors of the number 21,120,231 excluding 21,120,231?

 A: 9,600,153

Why is 9,600,153 the sum of all factors of 21,120,231, excluding 21,120,231?

The factors of the number 21,120,231 are: 1, 3, 11, 33, 640007, 1920021, 7040077, 21120231.

If you add them up, you will get the total of 21,120,240. Now subtract 21,120,231 to get 9,600,153


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