Q: What is the sum of all factors of the number 421,603,432 excluding 421,603,432?

A: 405,737,048

Why is 405,737,048 the sum of all factors of 421,603,432, excluding 421,603,432?

The factors of the number 421,603,432 are: 1, 2, 4, 8, 23, 46, 92, 184, 353, 706, 1412, 2824, 6491, 8119, 12982, 16238, 25964, 32476, 51928, 64952, 149293, 298586, 597172, 1194344, 2291323, 4582646, 9165292, 18330584, 52700429, 105400858, 210801716, 421603432.

If you add them up, you will get the total of 421,603,837. Now subtract 421,603,432 to get 405,737,048