Q: What is the sum of all factors of the number 251,720 excluding 251,720?

A: 439,480

Why is 439,480 the sum of all factors of 251,720, excluding 251,720?

The factors of the number 251,720 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 232, 248, 280, 290, 310, 406, 434, 580, 620, 812, 868, 899, 1015, 1085, 1160, 1240, 1624, 1736, 1798, 2030, 2170, 3596, 4060, 4340, 4495, 6293, 7192, 8120, 8680, 8990, 12586, 17980, 25172, 31465, 35960, 50344, 62930, 125860, 251720.

If you add them up, you will get the total of 252,159. Now subtract 251,720 to get 439,480