Q: What is the sum of all factors of the number 152,505,240 excluding 152,505,240?

Why is 321,657,960 the sum of all factors of 152,505,240, excluding 152,505,240?

The factors of the number 152,505,240 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 139, 164, 205, 223, 246, 278, 328, 410, 417, 446, 492, 556, 615, 669, 695, 820, 834, 892, 984, 1112, 1115, 1230, 1338, 1390, 1640, 1668, 1784, 2085, 2230, 2460, 2676, 2780, 3336, 3345, 4170, 4460, 4920, 5352, 5560, 5699, 6690, 8340, 8920, 9143, 11398, 13380, 16680, 17097, 18286, 22796, 26760, 27429, 28495, 30997, 34194, 36572, 45592, 45715, 54858, 56990, 61994, 68388, 73144, 85485, 91430, 92991, 109716, 113980, 123988, 136776, 137145, 154985, 170970, 182860, 185982, 219432, 227960, 247976, 274290, 309970, 341940, 365720, 371964, 464955, 548580, 619940, 683880, 743928, 929910, 1097160, 1239880, 1270877, 1859820, 2541754, 3719640, 3812631, 5083508, 6354385, 7625262, 10167016, 12708770, 15250524, 19063155, 25417540, 30501048, 38126310, 50835080, 76252620, 152505240.

If you add them up, you will get the total of 152,505,561. Now subtract 152,505,240 to get 321,657,960

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