The factors of the number 4,482,720 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 283, 288, 330, 352, 360, 396, 440, 480, 495, 528, 566, 660, 720, 792, 849, 880, 990, 1056, 1132, 1320, 1415, 1440, 1584, 1698, 1760, 1980, 2264, 2547, 2640, 2830, 3113, 3168, 3396, 3960, 4245, 4528, 5094, 5280, 5660, 6226, 6792, 7920, 8490, 9056, 9339, 10188, 11320, 12452, 12735, 13584, 15565, 15840, 16980, 18678, 20376, 22640, 24904, 25470, 27168, 28017, 31130, 33960, 37356, 40752, 45280, 46695, 49808, 50940, 56034, 62260, 67920, 74712, 81504, 93390, 99616, 101880, 112068, 124520, 135840, 140085, 149424, 186780, 203760, 224136, 249040, 280170, 298848, 373560, 407520, 448272, 498080, 560340, 747120, 896544, 1120680, 1494240, 2241360, 4482720.
If you add them up, you will get the total of 16,746,912.