Q: What is the sum of all factors of the number 402,353,421 excluding 402,353,421?

 A: 158,748,915

Why is 158,748,915 the sum of all factors of 402,353,421, excluding 402,353,421?

The factors of the number 402,353,421 are: 1, 3, 23, 69, 443, 1329, 10189, 13163, 30567, 39489, 302749, 908247, 5831209, 17493627, 134117807, 402353421.

If you add them up, you will get the total of 402,353,579. Now subtract 402,353,421 to get 158,748,915


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