Q: What is the sum of all factors of the number 243,900 excluding 243,900?

A: 523,412

Why is 523,412 the sum of all factors of 243,900, excluding 243,900?

The factors of the number 243,900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 271, 300, 450, 542, 813, 900, 1084, 1355, 1626, 2439, 2710, 3252, 4065, 4878, 5420, 6775, 8130, 9756, 12195, 13550, 16260, 20325, 24390, 27100, 40650, 48780, 60975, 81300, 121950, 243900.

If you add them up, you will get the total of 244,423. Now subtract 243,900 to get 523,412