The factors of the number 4,222,400 are: 1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 29, 32, 35, 40, 50, 52, 56, 58, 64, 65, 70, 80, 91, 100, 104, 112, 116, 130, 140, 145, 160, 175, 182, 200, 203, 208, 224, 232, 260, 280, 290, 320, 325, 350, 364, 377, 400, 406, 416, 448, 455, 464, 520, 560, 580, 650, 700, 725, 728, 754, 800, 812, 832, 910, 928, 1015, 1040, 1120, 1160, 1300, 1400, 1450, 1456, 1508, 1600, 1624, 1820, 1856, 1885, 2030, 2080, 2240, 2275, 2320, 2600, 2639, 2800, 2900, 2912, 3016, 3248, 3640, 3770, 4060, 4160, 4550, 4640, 5075, 5200, 5278, 5600, 5800, 5824, 6032, 6496, 7280, 7540, 8120, 9100, 9280, 9425, 10150, 10400, 10556, 11200, 11600, 12064, 12992, 13195, 14560, 15080, 16240, 18200, 18850, 20300, 20800, 21112, 23200, 24128, 26390, 29120, 30160, 32480, 36400, 37700, 40600, 42224, 46400, 52780, 60320, 64960, 65975, 72800, 75400, 81200, 84448, 105560, 120640, 131950, 145600, 150800, 162400, 168896, 211120, 263900, 301600, 324800, 422240, 527800, 603200, 844480, 1055600, 2111200, 4222400.
If you add them up, you will get the total of 13,228,320.