Q: What is the sum of all factors of the number 80,890,020 excluding 80,890,020?

Why is 166,915,356 the sum of all factors of 80,890,020, excluding 80,890,020?

The factors of the number 80,890,020 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1236, 1545, 1854, 2060, 3090, 3708, 4363, 4635, 6180, 8726, 9270, 13089, 17452, 18540, 21815, 26178, 39267, 43630, 52356, 65445, 78534, 87260, 130890, 157068, 196335, 261780, 392670, 449389, 785340, 898778, 1348167, 1797556, 2246945, 2696334, 4044501, 4493890, 5392668, 6740835, 8089002, 8987780, 13481670, 16178004, 20222505, 26963340, 40445010, 80890020.

If you add them up, you will get the total of 80,890,186. Now subtract 80,890,020 to get 166,915,356

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