Q: What is the sum of all factors of the number 87,420 excluding 87,420?

A: 170,628

Why is 170,628 the sum of all factors of 87,420, excluding 87,420?

The factors of the number 87,420 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 47, 60, 62, 93, 94, 124, 141, 155, 186, 188, 235, 282, 310, 372, 465, 470, 564, 620, 705, 930, 940, 1410, 1457, 1860, 2820, 2914, 4371, 5828, 7285, 8742, 14570, 17484, 21855, 29140, 43710, 87420.

If you add them up, you will get the total of 87,590. Now subtract 87,420 to get 170,628