The factors of the number 64,501,920 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 79, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 158, 160, 162, 168, 180, 189, 210, 216, 224, 237, 240, 243, 252, 270, 280, 288, 315, 316, 324, 336, 360, 378, 395, 405, 420, 432, 474, 480, 486, 504, 540, 553, 560, 567, 630, 632, 648, 672, 711, 720, 729, 756, 790, 810, 840, 864, 945, 948, 972, 1008, 1080, 1106, 1120, 1134, 1185, 1215, 1260, 1264, 1296, 1422, 1440, 1458, 1512, 1580, 1620, 1659, 1680, 1701, 1890, 1896, 1944, 2016, 2133, 2160, 2212, 2268, 2370, 2430, 2520, 2528, 2592, 2765, 2835, 2844, 2916, 3024, 3160, 3240, 3318, 3360, 3402, 3555, 3645, 3780, 3792, 3888, 4266, 4320, 4424, 4536, 4740, 4860, 4977, 5040, 5103, 5530, 5670, 5688, 5832, 6048, 6320, 6399, 6480, 6636, 6804, 7110, 7290, 7560, 7584, 7776, 8295, 8505, 8532, 8848, 9072, 9480, 9720, 9954, 10080, 10206, 10665, 11060, 11340, 11376, 11664, 12640, 12798, 12960, 13272, 13608, 14220, 14580, 14931, 15120, 16590, 17010, 17064, 17696, 18144, 18960, 19197, 19440, 19908, 20412, 21330, 22120, 22680, 22752, 23328, 24885, 25515, 25596, 26544, 27216, 28440, 29160, 29862, 30240, 31995, 33180, 34020, 34128, 37920, 38394, 38880, 39816, 40824, 42660, 44240, 44793, 45360, 49770, 51030, 51192, 53088, 54432, 56880, 57591, 58320, 59724, 63990, 66360, 68040, 68256, 74655, 76788, 79632, 81648, 85320, 88480, 89586, 90720, 95985, 99540, 102060, 102384, 113760, 115182, 116640, 119448, 127980, 132720, 134379, 136080, 149310, 153576, 159264, 163296, 170640, 179172, 191970, 199080, 204120, 204768, 223965, 230364, 238896, 255960, 265440, 268758, 272160, 287955, 298620, 307152, 341280, 358344, 383940, 398160, 403137, 408240, 447930, 460728, 477792, 511920, 537516, 575910, 597240, 614304, 671895, 716688, 767880, 796320, 806274, 816480, 895860, 921456, 1023840, 1075032, 1151820, 1194480, 1343790, 1433376, 1535760, 1612548, 1791720, 1842912, 2015685, 2150064, 2303640, 2388960, 2687580, 3071520, 3225096, 3583440, 4031370, 4300128, 4607280, 5375160, 6450192, 7166880, 8062740, 9214560, 10750320, 12900384, 16125480, 21500640, 32250960, 64501920.
If you add them up, you will get the total of 264,418,560.