Q: What is the sum of all factors of the number 21,342,789 excluding 21,342,789?

 A: 11,857,287

Why is 11,857,287 the sum of all factors of 21,342,789, excluding 21,342,789?

The factors of the number 21,342,789 are: 1, 3, 9, 13, 39, 117, 182417, 547251, 1641753, 2371421, 7114263, 21342789.

If you add them up, you will get the total of 21,342,800. Now subtract 21,342,789 to get 11,857,287


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