Q: What is the sum of all factors of the number 15,562,640 excluding 15,562,640?

A: 21,399,280

Why is 21,399,280 the sum of all factors of 15,562,640, excluding 15,562,640?

The factors of the number 15,562,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4139, 8278, 16556, 20695, 33112, 41390, 66224, 82780, 165560, 194533, 331120, 389066, 778132, 972665, 1556264, 1945330, 3112528, 3890660, 7781320, 15562640.

If you add them up, you will get the total of 15,562,661. Now subtract 15,562,640 to get 21,399,280