Q: What is the sum of all factors of the number 331,840 excluding 331,840?

A: 518,552

Why is 518,552 the sum of all factors of 331,840, excluding 331,840?

The factors of the number 331,840 are: 1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 61, 64, 68, 80, 85, 122, 136, 160, 170, 244, 272, 305, 320, 340, 488, 544, 610, 680, 976, 1037, 1088, 1220, 1360, 1952, 2074, 2440, 2720, 3904, 4148, 4880, 5185, 5440, 8296, 9760, 10370, 16592, 19520, 20740, 33184, 41480, 66368, 82960, 165920, 331840.

If you add them up, you will get the total of 332,358. Now subtract 331,840 to get 518,552