Q: What is the sum of all factors of the number 815,420 excluding 815,420?

 A: 897,004

Why is 897,004 the sum of all factors of 815,420, excluding 815,420?

The factors of the number 815,420 are: 1, 2, 4, 5, 10, 20, 40771, 81542, 163084, 203855, 407710, 815420.

If you add them up, you will get the total of 816,317. Now subtract 815,420 to get 897,004


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