Q: What is the sum of all factors of the number 217,770 excluding 217,770?

A: 425,046

Why is 425,046 the sum of all factors of 217,770, excluding 217,770?

The factors of the number 217,770 are: 1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 51, 61, 70, 85, 102, 105, 119, 122, 170, 183, 210, 238, 255, 305, 357, 366, 427, 510, 595, 610, 714, 854, 915, 1037, 1190, 1281, 1785, 1830, 2074, 2135, 2562, 3111, 3570, 4270, 5185, 6222, 6405, 7259, 10370, 12810, 14518, 15555, 21777, 31110, 36295, 43554, 72590, 108885, 217770.

If you add them up, you will get the total of 218,195. Now subtract 217,770 to get 425,046