Q: What is the sum of all factors of the number 787,280 excluding 787,280?

A: 1,186,552

Why is 1,186,552 the sum of all factors of 787,280, excluding 787,280?

The factors of the number 787,280 are: 1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 757, 1040, 1514, 3028, 3785, 6056, 7570, 9841, 12112, 15140, 19682, 30280, 39364, 49205, 60560, 78728, 98410, 157456, 196820, 393640, 787280.

If you add them up, you will get the total of 787,281. Now subtract 787,280 to get 1,186,552