The factors of the number 231,356,256 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 101, 107, 202, 214, 223, 303, 321, 404, 428, 446, 606, 642, 669, 808, 856, 892, 1212, 1284, 1338, 1616, 1712, 1784, 2424, 2568, 2676, 3232, 3424, 3568, 4848, 5136, 5352, 7136, 9696, 10272, 10704, 10807, 21408, 21614, 22523, 23861, 32421, 43228, 45046, 47722, 64842, 67569, 71583, 86456, 90092, 95444, 129684, 135138, 143166, 172912, 180184, 190888, 259368, 270276, 286332, 345824, 360368, 381776, 518736, 540552, 572664, 720736, 763552, 1037472, 1081104, 1145328, 2162208, 2290656, 2409961, 4819922, 7229883, 9639844, 14459766, 19279688, 28919532, 38559376, 57839064, 77118752, 115678128, 231356256.
If you add them up, you will get the total of 231,356,646. Now subtract 231,356,256 to get 390,474,912