Q: What is the sum of all factors of the number 2,163,970 excluding 2,163,970?

Why is 1,731,194 the sum of all factors of 2,163,970, excluding 2,163,970?

The factors of the number 2,163,970 are: 1, 2, 5, 10, 216397, 432794, 1081985, 2163970.

If you add them up, you will get the total of 2,163,971. Now subtract 2,163,970 to get 1,731,194

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