21043459840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{953}}^1\times {\mathrm{1327}}^1$

素因数の和:2314

約数の個数: 144

約数和(自身を含む): 54380930688

約数和(自身を除く): 33337470848

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 953, 1040, 1280, 1327, 1664, 1906, 2080, 2654, 3328, 3812, 4160, 4765, 5308, 6635, 7624, 8320, 9530, 10616, 12389, 13270, 15248, 16640, 17251, 19060, 21232, 24778, 26540, 30496, 34502, 38120, 42464, 49556, 53080, 60992, 61945, 69004, 76240, 84928, 86255, 99112, 106160, 121984, 123890, 138008, 152480, 169856, 172510, 198224, 212320, 243968, 247780, 276016, 304960, 339712, 345020, 396448, 424640, 495560, 552032, 609920, 690040, 792896, 849280, 991120, 1104064, 1219840, 1264631, 1380080, 1585792, 1698560, 1982240, 2208128, 2529262, 2760160, 3171584, 3964480, 4416256, 5058524, 5520320, 6323155, 7928960, 10117048, 11040640, 12646310, 15857920, 16440203, 20234096, 22081280, 25292620, 32880406, 40468192, 50585240, 65760812, 80936384, 82201015, 101170480, 131521624, 161872768, 164402030, 202340960, 263043248, 323745536, 328804060, 404681920, 526086496, 657608120, 809363840, 1052172992, 1315216240, 1618727680, 2104345984, 2630432480, 4208691968, 5260864960, 10521729920, 21043459840]

約数ペア:

[(1, 21043459840), (2, 10521729920), (4, 5260864960), (5, 4208691968), (8, 2630432480), (10, 2104345984), (13, 1618727680), (16, 1315216240), (20, 1052172992), (26, 809363840), (32, 657608120), (40, 526086496), (52, 404681920), (64, 328804060), (65, 323745536), (80, 263043248), (104, 202340960), (128, 164402030), (130, 161872768), (160, 131521624), (208, 101170480), (256, 82201015), (260, 80936384), (320, 65760812), (416, 50585240), (520, 40468192), (640, 32880406), (832, 25292620), (953, 22081280), (1040, 20234096), (1280, 16440203), (1327, 15857920), (1664, 12646310), (1906, 11040640), (2080, 10117048), (2654, 7928960), (3328, 6323155), (3812, 5520320), (4160, 5058524), (4765, 4416256), (5308, 3964480), (6635, 3171584), (7624, 2760160), (8320, 2529262), (9530, 2208128), (10616, 1982240), (12389, 1698560), (13270, 1585792), (15248, 1380080), (16640, 1264631), (17251, 1219840), (19060, 1104064), (21232, 991120), (24778, 849280), (26540, 792896), (30496, 690040), (34502, 609920), (38120, 552032), (42464, 495560), (49556, 424640), (53080, 396448), (60992, 345020), (61945, 339712), (69004, 304960), (76240, 276016), (84928, 247780), (86255, 243968), (99112, 212320), (106160, 198224), (121984, 172510), (123890, 169856), (138008, 152480)]