Q: What is the sum of all factors of the number 198,840 excluding 198,840?

 A: 398,040

Why is 398,040 the sum of all factors of 198,840, excluding 198,840?

The factors of the number 198,840 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 1657, 3314, 4971, 6628, 8285, 9942, 13256, 16570, 19884, 24855, 33140, 39768, 49710, 66280, 99420, 198840.

If you add them up, you will get the total of 199,238. Now subtract 198,840 to get 398,040


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