Q: What is the sum of all factors of the number 424,220,420 excluding 424,220,420?

A: 540,449,440

Why is 540,449,440 the sum of all factors of 424,220,420, excluding 424,220,420?

The factors of the number 424,220,420 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 125509, 251018, 502036, 627545, 1255090, 1631617, 2510180, 3263234, 6526468, 8158085, 16316170, 21211021, 32632340, 42422042, 84844084, 106055105, 212110210, 424220420.

If you add them up, you will get the total of 424,220,960. Now subtract 424,220,420 to get 540,449,440