Q: What is the sum of all factors of the number 217,260 excluding 217,260?

A: 490,356

Why is 490,356 the sum of all factors of 217,260, excluding 217,260?

The factors of the number 217,260 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 71, 85, 90, 102, 142, 153, 170, 180, 204, 213, 255, 284, 306, 340, 355, 426, 510, 612, 639, 710, 765, 852, 1020, 1065, 1207, 1278, 1420, 1530, 2130, 2414, 2556, 3060, 3195, 3621, 4260, 4828, 6035, 6390, 7242, 10863, 12070, 12780, 14484, 18105, 21726, 24140, 36210, 43452, 54315, 72420, 108630, 217260.

If you add them up, you will get the total of 217,750. Now subtract 217,260 to get 490,356