Q: What is the sum of all factors of the number 420,421,403 excluding 420,421,403?

 A: 231,445

Why is 231,445 the sum of all factors of 420,421,403, excluding 420,421,403?

The factors of the number 420,421,403 are: 1, 1831, 229613, 420421403.

If you add them up, you will get the total of 420,421,634. Now subtract 420,421,403 to get 231,445


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