Q: What is the sum of all factors of the number 990,408 excluding 990,408?

Why is 1,572,792 the sum of all factors of 990,408, excluding 990,408?

The factors of the number 990,408 are: 1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 116, 174, 232, 348, 696, 1423, 2846, 4269, 5692, 8538, 11384, 17076, 34152, 41267, 82534, 123801, 165068, 247602, 330136, 495204, 990408.

If you add them up, you will get the total of 990,409. Now subtract 990,408 to get 1,572,792

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