Q: What is the sum of all factors of the number 427,280 excluding 427,280?

A: 738,940

Why is 738,940 the sum of all factors of 427,280, excluding 427,280?

The factors of the number 427,280 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 109, 112, 140, 196, 218, 245, 280, 392, 436, 490, 545, 560, 763, 784, 872, 980, 1090, 1526, 1744, 1960, 2180, 3052, 3815, 3920, 4360, 5341, 6104, 7630, 8720, 10682, 12208, 15260, 21364, 26705, 30520, 42728, 53410, 61040, 85456, 106820, 213640, 427280.

If you add them up, you will get the total of 428,018. Now subtract 427,280 to get 738,940