Q: What is the sum of all factors of the number 872,420 excluding 872,420?
A: 977,428
The factors of the number 872,420 are: 1, 2, 4, 5, 10, 20, 181, 241, 362, 482, 724, 905, 964, 1205, 1810, 2410, 3620, 4820, 43621, 87242, 174484, 218105, 436210, 872420.
If you add them up, you will get the total of 873,397. Now subtract 872,420 to get 977,428