Q: What is the sum of all factors of the number 28,288,520 excluding 28,288,520?

Why is 40,258,000 the sum of all factors of 28,288,520, excluding 28,288,520?

The factors of the number 28,288,520 are: 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54401, 108802, 217604, 272005, 435208, 544010, 707213, 1088020, 1414426, 2176040, 2828852, 3536065, 5657704, 7072130, 14144260, 28288520.

If you add them up, you will get the total of 28,288,560. Now subtract 28,288,520 to get 40,258,000

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