Q: What is the sum of all factors of the number 121,155,345 excluding 121,155,345?

A: 108,815,319

Why is 108,815,319 the sum of all factors of 121,155,345, excluding 121,155,345?

The factors of the number 121,155,345 are: 1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 6885, 17597, 52791, 87985, 158373, 263955, 299149, 475119, 791865, 897447, 1425357, 1495745, 2375595, 2692341, 4487235, 7126785, 8077023, 13461705, 24231069, 40385115, 121155345.

If you add them up, you will get the total of 121,155,453. Now subtract 121,155,345 to get 108,815,319