Q: What is the sum of all factors of the number 255,640 excluding 255,640?

A: 470,120

Why is 470,120 the sum of all factors of 255,640, excluding 255,640?

The factors of the number 255,640 are: 1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 83, 88, 110, 140, 154, 166, 220, 280, 308, 332, 385, 415, 440, 581, 616, 664, 770, 830, 913, 1162, 1540, 1660, 1826, 2324, 2905, 3080, 3320, 3652, 4565, 4648, 5810, 6391, 7304, 9130, 11620, 12782, 18260, 23240, 25564, 31955, 36520, 51128, 63910, 127820, 255640.

If you add them up, you will get the total of 256,110. Now subtract 255,640 to get 470,120