Q: What is the sum of all factors of the number 21,320,100 excluding 21,320,100?

A: 45,509,390

Why is 45,509,390 the sum of all factors of 21,320,100, excluding 21,320,100?

The factors of the number 21,320,100 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 23689, 47378, 71067, 94756, 118445, 142134, 213201, 236890, 284268, 355335, 426402, 473780, 592225, 710670, 852804, 1066005, 1184450, 1421340, 1776675, 2132010, 2368900, 3553350, 4264020, 5330025, 7106700, 10660050, 21320100.

If you add them up, you will get the total of 21,320,145. Now subtract 21,320,100 to get 45,509,390