Q: What is the sum of all factors of the number 387,120 excluding 387,120?

A: 813,696

Why is 813,696 the sum of all factors of 387,120, excluding 387,120?

The factors of the number 387,120 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1613, 3226, 4839, 6452, 8065, 9678, 12904, 16130, 19356, 24195, 25808, 32260, 38712, 48390, 64520, 77424, 96780, 129040, 193560, 387120.

If you add them up, you will get the total of 387,933. Now subtract 387,120 to get 813,696