Q: What is the sum of all factors of the number 1,378,360 excluding 1,378,360?

Why is 1,907,000 the sum of all factors of 1,378,360, excluding 1,378,360?

The factors of the number 1,378,360 are: 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 2027, 4054, 8108, 10135, 16216, 20270, 34459, 40540, 68918, 81080, 137836, 172295, 275672, 344590, 689180, 1378360.

If you add them up, you will get the total of 1,378,361. Now subtract 1,378,360 to get 1,907,000

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