Q: What is the sum of all factors of the number 987,543,258 excluding 987,543,258?

 A: 1,139,473,158

Why is 1,139,473,158 the sum of all factors of 987,543,258, excluding 987,543,258?

The factors of the number 987,543,258 are: 1, 2, 3, 6, 13, 26, 39, 78, 12660811, 25321622, 37982433, 75964866, 164590543, 329181086, 493771629, 987543258.

If you add them up, you will get the total of 987,543,259. Now subtract 987,543,258 to get 1,139,473,158


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