Q: What is the sum of all factors of the number 305,080 excluding 305,080?

 A: 407,720

Why is 407,720 the sum of all factors of 305,080, excluding 305,080?

The factors of the number 305,080 are: 1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 263, 290, 526, 580, 1052, 1160, 1315, 2104, 2630, 5260, 7627, 10520, 15254, 30508, 38135, 61016, 76270, 152540, 305080.

If you add them up, you will get the total of 305,487. Now subtract 305,080 to get 407,720


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