Q: What is the sum of all factors of the number 640,523,560 excluding 640,523,560?

A: 802,556,600

Why is 802,556,600 the sum of all factors of 640,523,560, excluding 640,523,560?

The factors of the number 640,523,560 are: 1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 7870, 15740, 20347, 31480, 40694, 81388, 101735, 162776, 203470, 406940, 813880, 16013089, 32026178, 64052356, 80065445, 128104712, 160130890, 320261780, 640523560.

If you add them up, you will get the total of 640,524,362. Now subtract 640,523,560 to get 802,556,600