The factors of the number 400,306,662 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 58, 63, 71, 87, 126, 142, 174, 203, 213, 261, 406, 426, 497, 522, 609, 639, 994, 1218, 1278, 1491, 1543, 1827, 2059, 2982, 3086, 3654, 4118, 4473, 4629, 6177, 8946, 9258, 10801, 12354, 13887, 14413, 18531, 21602, 27774, 28826, 32403, 37062, 43239, 44747, 64806, 86478, 89494, 97209, 109553, 129717, 134241, 194418, 219106, 259434, 268482, 313229, 328659, 402723, 626458, 657318, 766871, 805446, 939687, 985977, 1533742, 1879374, 1971954, 2300613, 2819061, 3177037, 4601226, 5638122, 6354074, 6901839, 9531111, 13803678, 19062222, 22239259, 28593333, 44478518, 57186666, 66717777, 133435554, 200153331, 400306662.
If you add them up, you will get the total of 1,040,532,480.