The factors of the number 773,415,720 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 110, 120, 126, 132, 140, 154, 165, 168, 180, 198, 210, 220, 231, 252, 264, 280, 308, 315, 330, 360, 385, 396, 420, 440, 462, 495, 504, 616, 630, 660, 693, 770, 792, 840, 924, 990, 1155, 1260, 1320, 1386, 1540, 1848, 1980, 2310, 2520, 2772, 3080, 3465, 3960, 4620, 5544, 6930, 9240, 13860, 27720, 27901, 55802, 83703, 111604, 139505, 167406, 195307, 223208, 251109, 279010, 306911, 334812, 390614, 418515, 502218, 558020, 585921, 613822, 669624, 781228, 837030, 920733, 976535, 1004436, 1116040, 1171842, 1227644, 1255545, 1534555, 1562456, 1674060, 1757763, 1841466, 1953070, 2008872, 2148377, 2343684, 2455288, 2511090, 2762199, 2929605, 3069110, 3348120, 3515526, 3682932, 3906140, 4296754, 4603665, 4687368, 5022180, 5524398, 5859210, 6138220, 6445131, 7031052, 7365864, 7812280, 8593508, 8788815, 9207330, 10044360, 10741885, 11048796, 11718420, 12276440, 12890262, 13810995, 14062104, 17187016, 17577630, 18414660, 19335393, 21483770, 22097592, 23436840, 25780524, 27621990, 32225655, 35155260, 36829320, 38670786, 42967540, 51561048, 55243980, 64451310, 70310520, 77341572, 85935080, 96676965, 110487960, 128902620, 154683144, 193353930, 257805240, 386707860, 773415720.
If you add them up, you will get the total of 3,133,952,640.