Q: What is the sum of all factors of the number 3,155,140 excluding 3,155,140?

A: 4,142,780

Why is 4,142,780 the sum of all factors of 3,155,140, excluding 3,155,140?

The factors of the number 3,155,140 are: 1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 361, 380, 437, 460, 722, 874, 1444, 1748, 1805, 2185, 3610, 4370, 6859, 7220, 8303, 8740, 13718, 16606, 27436, 33212, 34295, 41515, 68590, 83030, 137180, 157757, 166060, 315514, 631028, 788785, 1577570, 3155140.

If you add them up, you will get the total of 3,155,144. Now subtract 3,155,140 to get 4,142,780