Q: What is the sum of all factors of the number 340,404,340 excluding 340,404,340?

A: 398,499,980

Why is 398,499,980 the sum of all factors of 340,404,340, excluding 340,404,340?

The factors of the number 340,404,340 are: 1, 2, 4, 5, 10, 20, 43, 86, 101, 172, 202, 215, 404, 430, 505, 860, 1010, 2020, 3919, 4343, 7838, 8686, 15676, 17372, 19595, 21715, 39190, 43430, 78380, 86860, 168517, 337034, 395819, 674068, 791638, 842585, 1583276, 1685170, 1979095, 3370340, 3958190, 7916380, 17020217, 34040434, 68080868, 85101085, 170202170, 340404340.

If you add them up, you will get the total of 340,404,738. Now subtract 340,404,340 to get 398,499,980