The factors of the number 3,120,480 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, 197, 198, 220, 240, 264, 288, 330, 352, 360, 394, 396, 440, 480, 495, 528, 591, 660, 720, 788, 792, 880, 985, 990, 1056, 1182, 1320, 1440, 1576, 1584, 1760, 1773, 1970, 1980, 2167, 2364, 2640, 2955, 3152, 3168, 3546, 3940, 3960, 4334, 4728, 5280, 5910, 6304, 6501, 7092, 7880, 7920, 8668, 8865, 9456, 10835, 11820, 13002, 14184, 15760, 15840, 17336, 17730, 18912, 19503, 21670, 23640, 26004, 28368, 31520, 32505, 34672, 35460, 39006, 43340, 47280, 52008, 56736, 65010, 69344, 70920, 78012, 86680, 94560, 97515, 104016, 130020, 141840, 156024, 173360, 195030, 208032, 260040, 283680, 312048, 346720, 390060, 520080, 624096, 780120, 1040160, 1560240, 3120480.
If you add them up, you will get the total of 11,675,664.