21001249984

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{863}}^1\times {\mathrm{2659}}^1$

素因数の和:3558

約数の個数: 112

約数和(自身を含む): 49035248640

約数和(自身を除く): 28033998656

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 143, 176, 208, 286, 352, 416, 572, 704, 832, 863, 1144, 1726, 2288, 2659, 3452, 4576, 5318, 6904, 9152, 9493, 10636, 11219, 13808, 18986, 21272, 22438, 27616, 29249, 34567, 37972, 42544, 44876, 55232, 58498, 69134, 75944, 85088, 89752, 116996, 123409, 138268, 151888, 170176, 179504, 233992, 246818, 276536, 303776, 359008, 380237, 467984, 493636, 553072, 607552, 718016, 760474, 935968, 987272, 1106144, 1520948, 1871936, 1974544, 2212288, 2294717, 3041896, 3949088, 4589434, 6083792, 7898176, 9178868, 12167584, 18357736, 24335168, 25241887, 29831321, 36715472, 50483774, 59662642, 73430944, 100967548, 119325284, 146861888, 201935096, 238650568, 328144531, 403870192, 477301136, 656289062, 807740384, 954602272, 1312578124, 1615480768, 1909204544, 2625156248, 5250312496, 10500624992, 21001249984]

約数ペア:

[(1, 21001249984), (2, 10500624992), (4, 5250312496), (8, 2625156248), (11, 1909204544), (13, 1615480768), (16, 1312578124), (22, 954602272), (26, 807740384), (32, 656289062), (44, 477301136), (52, 403870192), (64, 328144531), (88, 238650568), (104, 201935096), (143, 146861888), (176, 119325284), (208, 100967548), (286, 73430944), (352, 59662642), (416, 50483774), (572, 36715472), (704, 29831321), (832, 25241887), (863, 24335168), (1144, 18357736), (1726, 12167584), (2288, 9178868), (2659, 7898176), (3452, 6083792), (4576, 4589434), (5318, 3949088), (6904, 3041896), (9152, 2294717), (9493, 2212288), (10636, 1974544), (11219, 1871936), (13808, 1520948), (18986, 1106144), (21272, 987272), (22438, 935968), (27616, 760474), (29249, 718016), (34567, 607552), (37972, 553072), (42544, 493636), (44876, 467984), (55232, 380237), (58498, 359008), (69134, 303776), (75944, 276536), (85088, 246818), (89752, 233992), (116996, 179504), (123409, 170176), (138268, 151888)]