The factors of the number 501,004,008 are: 1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 19, 24, 27, 34, 36, 38, 43, 51, 54, 57, 68, 72, 76, 86, 102, 108, 114, 129, 136, 152, 153, 167, 171, 172, 204, 216, 228, 258, 306, 323, 334, 342, 344, 387, 408, 456, 459, 501, 513, 516, 612, 646, 668, 684, 731, 774, 817, 918, 969, 1002, 1026, 1032, 1161, 1224, 1292, 1336, 1368, 1462, 1503, 1548, 1634, 1836, 1938, 2004, 2052, 2193, 2322, 2451, 2584, 2839, 2907, 2924, 3006, 3096, 3173, 3268, 3672, 3876, 4008, 4104, 4386, 4509, 4644, 4902, 5678, 5814, 5848, 6012, 6346, 6536, 6579, 7181, 7353, 7752, 8517, 8721, 8772, 9018, 9288, 9519, 9804, 11356, 11628, 12024, 12692, 13158, 13889, 14362, 14706, 17034, 17442, 17544, 18036, 19038, 19608, 19737, 21543, 22059, 22712, 23256, 25384, 25551, 26316, 27778, 28557, 28724, 29412, 34068, 34884, 36072, 38076, 39474, 41667, 43086, 44118, 51102, 52632, 53941, 55556, 57114, 57448, 58824, 64629, 68136, 69768, 76152, 76653, 78948, 83334, 85671, 86172, 88236, 102204, 107882, 111112, 114228, 122077, 125001, 129258, 136439, 153306, 157896, 161823, 166668, 171342, 172344, 176472, 193887, 204408, 215764, 228456, 244154, 250002, 258516, 272878, 306612, 323646, 333336, 342684, 366231, 375003, 387774, 409317, 431528, 485469, 488308, 500004, 517032, 545756, 613224, 647292, 685368, 732462, 750006, 775548, 818634, 970938, 976616, 1000008, 1091512, 1098693, 1227951, 1294584, 1456407, 1464924, 1500012, 1551096, 1637268, 1941876, 2197386, 2319463, 2455902, 2912814, 2929848, 3000024, 3274536, 3296079, 3683853, 3883752, 4394772, 4638926, 4911804, 5825628, 6592158, 6958389, 7367706, 8789544, 9277852, 9823608, 11651256, 13184316, 13916778, 14735412, 18555704, 20875167, 26368632, 27833556, 29470824, 41750334, 55667112, 62625501, 83500668, 125251002, 167001336, 250502004, 501004008.
If you add them up, you will get the total of 1,596,672,000.