Q: What is the sum of all factors of the number 280,578,340 excluding 280,578,340?

Why is 392,810,012 the sum of all factors of 280,578,340, excluding 280,578,340?

The factors of the number 280,578,340 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2004131, 4008262, 8016524, 10020655, 14028917, 20041310, 28057834, 40082620, 56115668, 70144585, 140289170, 280578340.

If you add them up, you will get the total of 280,578,732. Now subtract 280,578,340 to get 392,810,012

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