Q: What is the sum of all factors of the number 78,720 excluding 78,720?

A: 178,320

Why is 178,320 the sum of all factors of 78,720, excluding 78,720?

The factors of the number 78,720 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 41, 48, 60, 64, 80, 82, 96, 120, 123, 128, 160, 164, 192, 205, 240, 246, 320, 328, 384, 410, 480, 492, 615, 640, 656, 820, 960, 984, 1230, 1312, 1640, 1920, 1968, 2460, 2624, 3280, 3936, 4920, 5248, 6560, 7872, 9840, 13120, 15744, 19680, 26240, 39360, 78720.

If you add them up, you will get the total of 78,898. Now subtract 78,720 to get 178,320