Q: What is the sum of all factors of the number 189,640 excluding 189,640?

 A: 276,920

Why is 276,920 the sum of all factors of 189,640, excluding 189,640?

The factors of the number 189,640 are: 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 431, 440, 862, 1724, 2155, 3448, 4310, 4741, 8620, 9482, 17240, 18964, 23705, 37928, 47410, 94820, 189640.

If you add them up, you will get the total of 189,916. Now subtract 189,640 to get 276,920


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