Q: What is the sum of all factors of the number 252,400,509 excluding 252,400,509?

A: 128,287,491

Why is 128,287,491 the sum of all factors of 252,400,509, excluding 252,400,509?

The factors of the number 252,400,509 are: 1, 3, 9, 27, 109, 139, 327, 417, 617, 981, 1251, 1851, 2943, 3753, 5553, 15151, 16659, 45453, 67253, 85763, 136359, 201759, 257289, 409077, 605277, 771867, 1815831, 2315601, 9348167, 28044501, 84133503, 252400509.

If you add them up, you will get the total of 252,400,637. Now subtract 252,400,509 to get 128,287,491