Q: What is the sum of all factors of the number 316,420 excluding 316,420?

 A: 399,764

Why is 399,764 the sum of all factors of 316,420, excluding 316,420?

The factors of the number 316,420 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1217, 2434, 4868, 6085, 12170, 15821, 24340, 31642, 63284, 79105, 158210, 316420.

If you add them up, you will get the total of 316,819. Now subtract 316,420 to get 399,764


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