The factors of the number 51,663,520 are: 1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 101, 115, 139, 160, 184, 202, 230, 278, 368, 404, 460, 505, 556, 695, 736, 808, 920, 1010, 1112, 1390, 1616, 1840, 2020, 2224, 2323, 2780, 3197, 3232, 3680, 4040, 4448, 4646, 5560, 6394, 8080, 9292, 11120, 11615, 12788, 14039, 15985, 16160, 18584, 22240, 23230, 25576, 28078, 31970, 37168, 46460, 51152, 56156, 63940, 70195, 74336, 92920, 102304, 112312, 127880, 140390, 185840, 224624, 255760, 280780, 322897, 371680, 449248, 511520, 561560, 645794, 1123120, 1291588, 1614485, 2246240, 2583176, 3228970, 5166352, 6457940, 10332704, 12915880, 25831760, 51663520.
If you add them up, you will get the total of 51,663,597. Now subtract 51,663,520 to get 77,884,640