Q: What is the sum of all factors of the number 428,420 excluding 428,420?
A: 501,628
The factors of the number 428,420 are: 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 691, 1382, 2764, 3455, 6910, 13820, 21421, 42842, 85684, 107105, 214210, 428420.
If you add them up, you will get the total of 428,921. Now subtract 428,420 to get 501,628