Q: What is the sum of all factors of the number 399,855 excluding 399,855?

 A: 314,385

Why is 314,385 the sum of all factors of 399,855, excluding 399,855?

The factors of the number 399,855 are: 1, 3, 5, 15, 19, 23, 57, 61, 69, 95, 115, 183, 285, 305, 345, 437, 915, 1159, 1311, 1403, 2185, 3477, 4209, 5795, 6555, 7015, 17385, 21045, 26657, 79971, 133285, 399855.

If you add them up, you will get the total of 400,169. Now subtract 399,855 to get 314,385


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