Q: What is the sum of all factors of the number 81,960 excluding 81,960?

 A: 164,280

Why is 164,280 the sum of all factors of 81,960, excluding 81,960?

The factors of the number 81,960 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 683, 1366, 2049, 2732, 3415, 4098, 5464, 6830, 8196, 10245, 13660, 16392, 20490, 27320, 40980, 81960.

If you add them up, you will get the total of 82,124. Now subtract 81,960 to get 164,280


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