Q: What is the sum of all factors of the number 21,046,425 excluding 21,046,425?

A: 15,955,671

Why is 15,955,671 the sum of all factors of 21,046,425, excluding 21,046,425?

The factors of the number 21,046,425 are: 1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 289, 425, 867, 971, 1275, 1445, 2913, 4335, 4855, 7225, 14565, 16507, 21675, 24275, 49521, 72825, 82535, 247605, 280619, 412675, 841857, 1238025, 1403095, 4209285, 7015475, 21046425.

If you add them up, you will get the total of 21,046,440. Now subtract 21,046,425 to get 15,955,671