Q: What is the sum of all factors of the number 128,439 excluding 128,439?

 A: 67,401

Why is 67,401 the sum of all factors of 128,439, excluding 128,439?

The factors of the number 128,439 are: 1, 3, 9, 27, 67, 71, 201, 213, 603, 639, 1809, 1917, 4757, 14271, 42813, 128439.

If you add them up, you will get the total of 128,506. Now subtract 128,439 to get 67,401


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