Q: What is the sum of all factors of the number 72,800 excluding 72,800?

A: 145,936

Why is 145,936 the sum of all factors of 72,800, excluding 72,800?

The factors of the number 72,800 are: 1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 65, 70, 80, 91, 100, 104, 112, 130, 140, 160, 175, 182, 200, 208, 224, 260, 280, 325, 350, 364, 400, 416, 455, 520, 560, 650, 700, 728, 800, 910, 1040, 1120, 1300, 1400, 1456, 1820, 2080, 2275, 2600, 2800, 2912, 3640, 4550, 5200, 5600, 7280, 9100, 10400, 14560, 18200, 36400, 72800.

If you add them up, you will get the total of 72,945. Now subtract 72,800 to get 145,936