The factors of the number 320,100,320 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 139, 148, 160, 185, 278, 296, 370, 389, 556, 592, 695, 740, 778, 1112, 1184, 1390, 1480, 1556, 1945, 2224, 2780, 2960, 3112, 3890, 4448, 5143, 5560, 5920, 6224, 7780, 10286, 11120, 12448, 14393, 15560, 20572, 22240, 25715, 28786, 31120, 41144, 51430, 54071, 57572, 62240, 71965, 82288, 102860, 108142, 115144, 143930, 164576, 205720, 216284, 230288, 270355, 287860, 411440, 432568, 460576, 540710, 575720, 822880, 865136, 1081420, 1151440, 1730272, 2000627, 2162840, 2302880, 4001254, 4325680, 8002508, 8651360, 10003135, 16005016, 20006270, 32010032, 40012540, 64020064, 80025080, 160050160, 320100320.
If you add them up, you will get the total of 784,274,400.