Q: What is the sum of all factors of the number 316,640 excluding 316,640?

 A: 431,800

Why is 431,800 the sum of all factors of 316,640, excluding 316,640?

The factors of the number 316,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1979, 3958, 7916, 9895, 15832, 19790, 31664, 39580, 63328, 79160, 158320, 316640.

If you add them up, you will get the total of 317,071. Now subtract 316,640 to get 431,800


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