Q: What is the sum of all factors of the number 15,318,640 excluding 15,318,640?

A: 20,460,320

Why is 20,460,320 the sum of all factors of 15,318,640, excluding 15,318,640?

The factors of the number 15,318,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 457, 838, 914, 1676, 1828, 2095, 2285, 3352, 3656, 4190, 4570, 6704, 7312, 8380, 9140, 16760, 18280, 33520, 36560, 191483, 382966, 765932, 957415, 1531864, 1914830, 3063728, 3829660, 7659320, 15318640.

If you add them up, you will get the total of 15,318,660. Now subtract 15,318,640 to get 20,460,320