Q: What is the sum of all factors of the number 2,778,122 excluding 2,778,122?

Why is 1,398,778 the sum of all factors of 2,778,122, excluding 2,778,122?

The factors of the number 2,778,122 are: 1, 2, 509, 1018, 2729, 5458, 1389061, 2778122.

If you add them up, you will get the total of 2,778,123. Now subtract 2,778,122 to get 1,398,778

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