Q: What is the sum of all factors of the number 421,515 excluding 421,515?

A: 420,885

Why is 420,885 the sum of all factors of 421,515, excluding 421,515?

The factors of the number 421,515 are: 1, 3, 5, 9, 15, 17, 19, 29, 45, 51, 57, 85, 87, 95, 145, 153, 171, 255, 261, 285, 323, 435, 493, 551, 765, 855, 969, 1305, 1479, 1615, 1653, 2465, 2755, 2907, 4437, 4845, 4959, 7395, 8265, 9367, 14535, 22185, 24795, 28101, 46835, 84303, 140505, 421515.

If you add them up, you will get the total of 421,935. Now subtract 421,515 to get 420,885