Q: What is the sum of all factors of the number 221,556,100 excluding 221,556,100?

Why is 259,220,854 the sum of all factors of 221,556,100, excluding 221,556,100?

The factors of the number 221,556,100 are: 1, 2, 4, 5, 10, 20, 25, 50, 100, 2215561, 4431122, 8862244, 11077805, 22155610, 44311220, 55389025, 110778050, 221556100.

If you add them up, you will get the total of 221,556,359. Now subtract 221,556,100 to get 259,220,854

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