Q: What is the sum of all factors of the number 13,255,120 excluding 13,255,120?

A: 17,742,896

Why is 17,742,896 the sum of all factors of 13,255,120, excluding 13,255,120?

The factors of the number 13,255,120 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 743, 892, 1115, 1486, 1784, 2230, 2972, 3568, 3715, 4460, 5944, 7430, 8920, 11888, 14860, 17840, 29720, 59440, 165689, 331378, 662756, 828445, 1325512, 1656890, 2651024, 3313780, 6627560, 13255120.

If you add them up, you will get the total of 13,255,137. Now subtract 13,255,120 to get 17,742,896