Q: What is the sum of all factors of the number 21,131,700 excluding 21,131,700?

A: 40,010,220

Why is 40,010,220 the sum of all factors of 21,131,700, excluding 21,131,700?

The factors of the number 21,131,700 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 300, 70439, 140878, 211317, 281756, 352195, 422634, 704390, 845268, 1056585, 1408780, 1760975, 2113170, 3521950, 4226340, 5282925, 7043900, 10565850, 21131700.

If you add them up, you will get the total of 21,131,740. Now subtract 21,131,700 to get 40,010,220