The factors of the number 4,129,020 are: 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 113, 116, 126, 140, 145, 174, 180, 203, 210, 226, 252, 261, 290, 315, 339, 348, 406, 420, 435, 452, 522, 565, 580, 609, 630, 678, 791, 812, 870, 1015, 1017, 1044, 1130, 1218, 1260, 1305, 1356, 1582, 1695, 1740, 1827, 2030, 2034, 2260, 2373, 2436, 2610, 3045, 3164, 3277, 3390, 3654, 3955, 4060, 4068, 4746, 5085, 5220, 6090, 6554, 6780, 7119, 7308, 7910, 9135, 9492, 9831, 10170, 11865, 12180, 13108, 14238, 15820, 16385, 18270, 19662, 20340, 22939, 23730, 28476, 29493, 32770, 35595, 36540, 39324, 45878, 47460, 49155, 58986, 65540, 68817, 71190, 91756, 98310, 114695, 117972, 137634, 142380, 147465, 196620, 206451, 229390, 275268, 294930, 344085, 412902, 458780, 589860, 688170, 825804, 1032255, 1376340, 2064510, 4129020.
If you add them up, you will get the total of 14,938,560.