Q: What is the sum of all factors of the number 144,720 excluding 144,720?

A: 361,200

Why is 361,200 the sum of all factors of 144,720, excluding 144,720?

The factors of the number 144,720 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 67, 72, 80, 90, 108, 120, 134, 135, 144, 180, 201, 216, 240, 268, 270, 335, 360, 402, 432, 536, 540, 603, 670, 720, 804, 1005, 1072, 1080, 1206, 1340, 1608, 1809, 2010, 2160, 2412, 2680, 3015, 3216, 3618, 4020, 4824, 5360, 6030, 7236, 8040, 9045, 9648, 12060, 14472, 16080, 18090, 24120, 28944, 36180, 48240, 72360, 144720.

If you add them up, you will get the total of 145,081. Now subtract 144,720 to get 361,200