Q: What is the sum of all factors of the number 13,421,408 excluding 13,421,408?

 A: 22,140,832

Why is 22,140,832 the sum of all factors of 13,421,408, excluding 13,421,408?

The factors of the number 13,421,408 are: 1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 224, 286, 308, 352, 364, 416, 419, 572, 616, 728, 838, 1001, 1144, 1232, 1456, 1676, 2002, 2288, 2464, 2912, 2933, 3352, 4004, 4576, 4609, 5447, 5866, 6704, 8008, 9218, 10894, 11732, 13408, 16016, 18436, 21788, 23464, 32032, 32263, 36872, 38129, 43576, 46928, 59917, 64526, 73744, 76258, 87152, 93856, 119834, 129052, 147488, 152516, 174304, 239668, 258104, 305032, 419419, 479336, 516208, 610064, 838838, 958672, 1032416, 1220128, 1677676, 1917344, 3355352, 6710704, 13421408.

If you add them up, you will get the total of 13,421,430. Now subtract 13,421,408 to get 22,140,832


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