Q: What is the sum of all factors of the number 665,380 excluding 665,380?

A: 907,100

Why is 907,100 the sum of all factors of 665,380, excluding 665,380?

The factors of the number 665,380 are: 1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 103, 170, 190, 206, 323, 340, 380, 412, 515, 646, 1030, 1292, 1615, 1751, 1957, 2060, 3230, 3502, 3914, 6460, 7004, 7828, 8755, 9785, 17510, 19570, 33269, 35020, 39140, 66538, 133076, 166345, 332690, 665380.

If you add them up, you will get the total of 666,287. Now subtract 665,380 to get 907,100