Q: What is the sum of all factors of the number 163,840 excluding 163,840?

 A: 229,370

Why is 229,370 the sum of all factors of 163,840, excluding 163,840?

The factors of the number 163,840 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 8192, 10240, 16384, 20480, 32768, 40960, 81920, 163840.

If you add them up, you will get the total of 164,069. Now subtract 163,840 to get 229,370


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