Q: What is the sum of all factors of the number 131,820 including 131,820?
A: 399,840
The factors of the number 131,820 are: 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2197, 2535, 3380, 4394, 5070, 6591, 8788, 10140, 10985, 13182, 21970, 26364, 32955, 43940, 65910, 131820.
If you add them up, you will get the total of 399,840.