Q: What is the sum of all factors of the number 286,240 excluding 286,240?

 A: 390,380

Why is 390,380 the sum of all factors of 286,240, excluding 286,240?

The factors of the number 286,240 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1789, 3578, 7156, 8945, 14312, 17890, 28624, 35780, 57248, 71560, 143120, 286240.

If you add them up, you will get the total of 286,630. Now subtract 286,240 to get 390,380


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