Q: What is the sum of all factors of the number 161,980 excluding 161,980?
A: 261,380
The factors of the number 161,980 are: 1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 89, 91, 130, 140, 178, 182, 260, 356, 364, 445, 455, 623, 890, 910, 1157, 1246, 1780, 1820, 2314, 2492, 3115, 4628, 5785, 6230, 8099, 11570, 12460, 16198, 23140, 32396, 40495, 80990, 161980.
If you add them up, you will get the total of 162,241. Now subtract 161,980 to get 261,380