Q: What is the sum of all factors of the number 421,300,143 excluding 421,300,143?

A: 261,593,937

Why is 261,593,937 the sum of all factors of 421,300,143, excluding 421,300,143?

The factors of the number 421,300,143 are: 1, 3, 9, 11, 27, 33, 99, 297, 373, 1119, 3357, 3803, 4103, 10071, 11409, 12309, 34227, 36927, 41833, 102681, 110781, 125499, 376497, 1129491, 1418519, 4255557, 12766671, 15603709, 38300013, 46811127, 140433381, 421300143.

If you add them up, you will get the total of 421,300,404. Now subtract 421,300,143 to get 261,593,937