Q: What is the sum of all factors of the number 155,156,220 excluding 155,156,220?

A: 315,484,860

Why is 315,484,860 the sum of all factors of 155,156,220, excluding 155,156,220?

The factors of the number 155,156,220 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 861979, 1723958, 2585937, 3447916, 4309895, 5171874, 7757811, 8619790, 10343748, 12929685, 15515622, 17239580, 25859370, 31031244, 38789055, 51718740, 77578110, 155156220.

If you add them up, you will get the total of 155,156,535. Now subtract 155,156,220 to get 315,484,860