Q: What is the sum of all factors of the number 1,390,000 excluding 1,390,000?

A: 1,999,540

Why is 1,999,540 the sum of all factors of 1,390,000, excluding 1,390,000?

The factors of the number 1,390,000 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 139, 200, 250, 278, 400, 500, 556, 625, 695, 1000, 1112, 1250, 1390, 2000, 2224, 2500, 2780, 3475, 5000, 5560, 6950, 10000, 11120, 13900, 17375, 27800, 34750, 55600, 69500, 86875, 139000, 173750, 278000, 347500, 695000, 1390000.

If you add them up, you will get the total of 1,390,001. Now subtract 1,390,000 to get 1,999,540