Q: What is the sum of all factors of the number 6,420,994 excluding 6,420,994?

Why is 3,318,986 the sum of all factors of 6,420,994, excluding 6,420,994?

The factors of the number 6,420,994 are: 1, 2, 89, 178, 36073, 72146, 3210497, 6420994.

If you add them up, you will get the total of 6,420,997. Now subtract 6,420,994 to get 3,318,986

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