Q: What is the sum of all factors of the number 211,211,500 excluding 211,211,500?

A: 261,371,156

Why is 261,371,156 the sum of all factors of 211,211,500, excluding 211,211,500?

The factors of the number 211,211,500 are: 1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 1025, 2050, 4100, 5125, 10250, 10303, 20500, 20606, 41212, 51515, 103030, 206060, 257575, 422423, 515150, 844846, 1030300, 1287875, 1689692, 2112115, 2575750, 4224230, 5151500, 8448460, 10560575, 21121150, 42242300, 52802875, 105605750, 211211500.

If you add them up, you will get the total of 211,211,761. Now subtract 211,211,500 to get 261,371,156