Q: What is the sum of all factors of the number 40,040 excluding 40,040?

A: 80,920

Why is 80,920 the sum of all factors of 40,040, excluding 40,040?

The factors of the number 40,040 are: 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1820, 2002, 2860, 3080, 3640, 4004, 5005, 5720, 8008, 10010, 20020, 40040.

If you add them up, you will get the total of 40,120. Now subtract 40,040 to get 80,920