Q: What is the sum of all factors of the number 645,537,328 including 645,537,328?

Why is 1,371,474,720 the sum of all factors of 645,537,328, including 645,537,328?

The factors of the number 645,537,328 are: 1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 97, 136, 172, 194, 272, 344, 388, 569, 688, 731, 776, 1138, 1462, 1552, 1649, 2276, 2924, 3298, 4171, 4552, 5848, 6596, 8342, 9104, 9673, 11696, 13192, 16684, 19346, 24467, 26384, 33368, 38692, 48934, 55193, 66736, 70907, 77384, 97868, 110386, 141814, 154768, 195736, 220772, 283628, 391472, 415939, 441544, 567256, 831878, 883088, 938281, 1134512, 1663756, 1876562, 2373299, 3327512, 3753124, 4746598, 6655024, 7506248, 9493196, 15012496, 18986392, 37972784, 40346083, 80692166, 161384332, 322768664, 645537328.

If you add them up, you will get the total of 1,371,474,720.

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