Q: What is the sum of all factors of the number 287,360 excluding 287,360?

 A: 401,140

Why is 401,140 the sum of all factors of 287,360, excluding 287,360?

The factors of the number 287,360 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 449, 640, 898, 1796, 2245, 3592, 4490, 7184, 8980, 14368, 17960, 28736, 35920, 57472, 71840, 143680, 287360.

If you add them up, you will get the total of 287,761. Now subtract 287,360 to get 401,140


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