Q: What is the sum of all factors of the number 838,401,278 excluding 838,401,278?

A: 679,011,682

Why is 679,011,682 the sum of all factors of 838,401,278, excluding 838,401,278?

The factors of the number 838,401,278 are: 1, 2, 11, 13, 22, 26, 37, 74, 143, 286, 407, 481, 814, 962, 5291, 10582, 79229, 158458, 871519, 1029977, 1743038, 2059954, 2931473, 5862946, 11329747, 22659494, 32246203, 38109149, 64492406, 76218298, 419200639, 838401278.

If you add them up, you will get the total of 838,401,957. Now subtract 838,401,278 to get 679,011,682