Q: What is the sum of all factors of the number 277,943,055 excluding 277,943,055?

A: 216,433,905

Why is 216,433,905 the sum of all factors of 277,943,055, excluding 277,943,055?

The factors of the number 277,943,055 are: 1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 6045, 45979, 137937, 229895, 597727, 689685, 1425349, 1793181, 2988635, 4276047, 7126745, 8965905, 18529537, 21380235, 55588611, 92647685, 277943055.

If you add them up, you will get the total of 277,943,271. Now subtract 277,943,055 to get 216,433,905