The factors of the number 21,552,960 are: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 16, 20, 22, 24, 26, 30, 32, 33, 39, 40, 44, 48, 52, 55, 60, 64, 65, 66, 78, 80, 88, 96, 104, 110, 120, 130, 132, 143, 156, 157, 160, 165, 176, 192, 195, 208, 220, 240, 260, 264, 286, 312, 314, 320, 330, 352, 390, 416, 429, 440, 471, 480, 520, 528, 572, 624, 628, 660, 704, 715, 780, 785, 832, 858, 880, 942, 960, 1040, 1056, 1144, 1248, 1256, 1320, 1430, 1560, 1570, 1716, 1727, 1760, 1884, 2041, 2080, 2112, 2145, 2288, 2355, 2496, 2512, 2640, 2860, 3120, 3140, 3432, 3454, 3520, 3768, 4082, 4160, 4290, 4576, 4710, 5024, 5181, 5280, 5720, 6123, 6240, 6280, 6864, 6908, 7536, 8164, 8580, 8635, 9152, 9420, 10048, 10205, 10362, 10560, 11440, 12246, 12480, 12560, 13728, 13816, 15072, 16328, 17160, 17270, 18840, 20410, 20724, 22451, 22880, 24492, 25120, 25905, 27456, 27632, 30144, 30615, 32656, 34320, 34540, 37680, 40820, 41448, 44902, 45760, 48984, 50240, 51810, 55264, 61230, 65312, 67353, 68640, 69080, 75360, 81640, 82896, 89804, 97968, 103620, 110528, 112255, 122460, 130624, 134706, 137280, 138160, 150720, 163280, 165792, 179608, 195936, 207240, 224510, 244920, 269412, 276320, 326560, 331584, 336765, 359216, 391872, 414480, 449020, 489840, 538824, 552640, 653120, 673530, 718432, 828960, 898040, 979680, 1077648, 1347060, 1436864, 1657920, 1796080, 1959360, 2155296, 2694120, 3592160, 4310592, 5388240, 7184320, 10776480, 21552960.
If you add them up, you will get the total of 80,906,112.