The factors of the number 2,320,640 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 64, 70, 74, 80, 98, 112, 128, 140, 148, 160, 185, 196, 224, 245, 256, 259, 280, 296, 320, 370, 392, 448, 490, 518, 560, 592, 640, 740, 784, 896, 980, 1036, 1120, 1184, 1280, 1295, 1480, 1568, 1792, 1813, 1960, 2072, 2240, 2368, 2590, 2960, 3136, 3626, 3920, 4144, 4480, 4736, 5180, 5920, 6272, 7252, 7840, 8288, 8960, 9065, 9472, 10360, 11840, 12544, 14504, 15680, 16576, 18130, 20720, 23680, 29008, 31360, 33152, 36260, 41440, 47360, 58016, 62720, 66304, 72520, 82880, 116032, 145040, 165760, 232064, 290080, 331520, 464128, 580160, 1160320, 2320640.
If you add them up, you will get the total of 2,320,644. Now subtract 2,320,640 to get 4,320,316