Q: What is the sum of all factors of the number 288,900 excluding 288,900?

A: 648,540

Why is 648,540 the sum of all factors of 288,900, excluding 288,900?

The factors of the number 288,900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 90, 100, 107, 108, 135, 150, 180, 214, 225, 270, 300, 321, 428, 450, 535, 540, 642, 675, 900, 963, 1070, 1284, 1350, 1605, 1926, 2140, 2675, 2700, 2889, 3210, 3852, 4815, 5350, 5778, 6420, 8025, 9630, 10700, 11556, 14445, 16050, 19260, 24075, 28890, 32100, 48150, 57780, 72225, 96300, 144450, 288900.

If you add them up, you will get the total of 289,548. Now subtract 288,900 to get 648,540