Q: What is the sum of all factors of the number 378,780 excluding 378,780?

A: 709,860

Why is 709,860 the sum of all factors of 378,780, excluding 378,780?

The factors of the number 378,780 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 59, 60, 107, 118, 177, 214, 236, 295, 321, 354, 428, 535, 590, 642, 708, 885, 1070, 1180, 1284, 1605, 1770, 2140, 3210, 3540, 6313, 6420, 12626, 18939, 25252, 31565, 37878, 63130, 75756, 94695, 126260, 189390, 378780.

If you add them up, you will get the total of 379,489. Now subtract 378,780 to get 709,860