Q: What is the sum of all factors of the number 261,478,840 including 261,478,840?

A: 672,374,880

Why is 672,374,880 the sum of all factors of 261,478,840, including 261,478,840?

The factors of the number 261,478,840 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 933853, 1867706, 3735412, 4669265, 6536971, 7470824, 9338530, 13073942, 18677060, 26147884, 32684855, 37354120, 52295768, 65369710, 130739420, 261478840.

If you add them up, you will get the total of 672,374,880.