Q: What is the sum of all factors of the number 401,200 excluding 401,200?

A: 636,680

Why is 636,680 the sum of all factors of 401,200, excluding 401,200?

The factors of the number 401,200 are: 1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 59, 68, 80, 85, 100, 118, 136, 170, 200, 236, 272, 295, 340, 400, 425, 472, 590, 680, 850, 944, 1003, 1180, 1360, 1475, 1700, 2006, 2360, 2950, 3400, 4012, 4720, 5015, 5900, 6800, 8024, 10030, 11800, 16048, 20060, 23600, 25075, 40120, 50150, 80240, 100300, 200600, 401200.

If you add them up, you will get the total of 401,836. Now subtract 401,200 to get 636,680