Q: What is the sum of all factors of the number 129,280 excluding 129,280?

 A: 183,452

Why is 183,452 the sum of all factors of 129,280, excluding 129,280?

The factors of the number 129,280 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 256, 320, 404, 505, 640, 808, 1010, 1280, 1616, 2020, 3232, 4040, 6464, 8080, 12928, 16160, 25856, 32320, 64640, 129280.

If you add them up, you will get the total of 129,463. Now subtract 129,280 to get 183,452


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