Q: What is the sum of all factors of the number 1,378,539 excluding 1,378,539?

Why is 789,973 the sum of all factors of 1,378,539, excluding 1,378,539?

The factors of the number 1,378,539 are: 1, 3, 9, 27, 31, 61, 81, 93, 183, 243, 279, 549, 729, 837, 1647, 1891, 2511, 4941, 5673, 7533, 14823, 17019, 22599, 44469, 51057, 153171, 459513, 1378539.

If you add them up, you will get the total of 1,379,328. Now subtract 1,378,539 to get 789,973

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