Q: What is the sum of all factors of the number 244,640 excluding 244,640?

A: 390,400

Why is 390,400 the sum of all factors of 244,640, excluding 244,640?

The factors of the number 244,640 are: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 139, 160, 176, 220, 278, 352, 440, 556, 695, 880, 1112, 1390, 1529, 1760, 2224, 2780, 3058, 4448, 5560, 6116, 7645, 11120, 12232, 15290, 22240, 24464, 30580, 48928, 61160, 122320, 244640.

If you add them up, you will get the total of 245,030. Now subtract 244,640 to get 390,400