Q: What is the sum of all factors of the number 3,506,620 excluding 3,506,620?

Why is 4,424,324 the sum of all factors of 3,506,620, excluding 3,506,620?

The factors of the number 3,506,620 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 13487, 26974, 53948, 67435, 134870, 175331, 269740, 350662, 701324, 876655, 1753310, 3506620.

If you add them up, you will get the total of 3,506,624. Now subtract 3,506,620 to get 4,424,324

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