Q: What is the sum of all factors of the number 81,320,729 excluding 81,320,729?

 A: 11,689,831

Why is 11,689,831 the sum of all factors of 81,320,729, excluding 81,320,729?

The factors of the number 81,320,729 are: 1, 7, 1543, 7529, 10801, 52703, 11617247, 81320729.

If you add them up, you will get the total of 81,320,740. Now subtract 81,320,729 to get 11,689,831


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