Q: What is the sum of all factors of the number 21,431,279 excluding 21,431,279?

 A: 456,721

Why is 456,721 the sum of all factors of 21,431,279, excluding 21,431,279?

The factors of the number 21,431,279 are: 1, 71, 151, 1999, 10721, 141929, 301849, 21431279.

If you add them up, you will get the total of 21,431,735. Now subtract 21,431,279 to get 456,721


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