Q: What is the sum of all factors of the number 402,740 excluding 402,740?

 A: 508,660

Why is 508,660 the sum of all factors of 402,740, excluding 402,740?

The factors of the number 402,740 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1549, 3098, 6196, 7745, 15490, 20137, 30980, 40274, 80548, 100685, 201370, 402740.

If you add them up, you will get the total of 403,248. Now subtract 402,740 to get 508,660


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