Q: What is the sum of all factors of the number 261,440 excluding 261,440?
A: 409,120
The factors of the number 261,440 are: 1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 80, 86, 95, 152, 160, 172, 190, 215, 304, 320, 344, 380, 430, 608, 688, 760, 817, 860, 1216, 1376, 1520, 1634, 1720, 2752, 3040, 3268, 3440, 4085, 6080, 6536, 6880, 8170, 13072, 13760, 16340, 26144, 32680, 52288, 65360, 130720, 261440.
If you add them up, you will get the total of 261,849. Now subtract 261,440 to get 409,120