Q: What is the sum of all factors of the number 156,501,520 including 156,501,520?

Why is 420,115,968 the sum of all factors of 156,501,520, including 156,501,520?

The factors of the number 156,501,520 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 560, 707, 808, 1010, 1414, 1616, 2020, 2767, 2828, 3535, 4040, 5534, 5656, 7070, 8080, 11068, 11312, 13835, 14140, 19369, 22136, 27670, 28280, 38738, 44272, 55340, 56560, 77476, 96845, 110680, 154952, 193690, 221360, 279467, 309904, 387380, 558934, 774760, 1117868, 1397335, 1549520, 1956269, 2235736, 2794670, 3912538, 4471472, 5589340, 7825076, 9781345, 11178680, 15650152, 19562690, 22357360, 31300304, 39125380, 78250760, 156501520.

If you add them up, you will get the total of 420,115,968.

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