Q: What is the sum of all factors of the number 387,980 excluding 387,980?

 A: 470,500

Why is 470,500 the sum of all factors of 387,980, excluding 387,980?

The factors of the number 387,980 are: 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1021, 2042, 4084, 5105, 10210, 19399, 20420, 38798, 77596, 96995, 193990, 387980.

If you add them up, you will get the total of 388,450. Now subtract 387,980 to get 470,500


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