21045475840

素因数分解:

$2^9\times 5^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:710

約数の個数: 160

約数和(自身を含む): 51313680000

約数和(自身を除く): 30268204160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 199, 218, 256, 320, 379, 398, 436, 512, 545, 640, 758, 796, 872, 995, 1090, 1280, 1516, 1592, 1744, 1895, 1990, 2180, 2560, 3032, 3184, 3488, 3790, 3980, 4360, 6064, 6368, 6976, 7580, 7960, 8720, 12128, 12736, 13952, 15160, 15920, 17440, 21691, 24256, 25472, 27904, 30320, 31840, 34880, 41311, 43382, 48512, 50944, 55808, 60640, 63680, 69760, 75421, 82622, 86764, 97024, 101888, 108455, 121280, 127360, 139520, 150842, 165244, 173528, 194048, 206555, 216910, 242560, 254720, 279040, 301684, 330488, 347056, 377105, 413110, 433820, 485120, 509440, 603368, 660976, 694112, 754210, 826220, 867640, 970240, 1206736, 1321952, 1388224, 1508420, 1652440, 1735280, 2413472, 2643904, 2776448, 3016840, 3304880, 3470560, 4826944, 5287808, 5552896, 6033680, 6609760, 6941120, 8220889, 9653888, 10575616, 11105792, 12067360, 13219520, 13882240, 16441778, 19307776, 21151232, 24134720, 26439040, 27764480, 32883556, 38615552, 41104445, 48269440, 52878080, 55528960, 65767112, 82208890, 96538880, 105756160, 131534224, 164417780, 193077760, 263068448, 328835560, 526136896, 657671120, 1052273792, 1315342240, 2104547584, 2630684480, 4209095168, 5261368960, 10522737920, 21045475840]

約数ペア:

[(1, 21045475840), (2, 10522737920), (4, 5261368960), (5, 4209095168), (8, 2630684480), (10, 2104547584), (16, 1315342240), (20, 1052273792), (32, 657671120), (40, 526136896), (64, 328835560), (80, 263068448), (109, 193077760), (128, 164417780), (160, 131534224), (199, 105756160), (218, 96538880), (256, 82208890), (320, 65767112), (379, 55528960), (398, 52878080), (436, 48269440), (512, 41104445), (545, 38615552), (640, 32883556), (758, 27764480), (796, 26439040), (872, 24134720), (995, 21151232), (1090, 19307776), (1280, 16441778), (1516, 13882240), (1592, 13219520), (1744, 12067360), (1895, 11105792), (1990, 10575616), (2180, 9653888), (2560, 8220889), (3032, 6941120), (3184, 6609760), (3488, 6033680), (3790, 5552896), (3980, 5287808), (4360, 4826944), (6064, 3470560), (6368, 3304880), (6976, 3016840), (7580, 2776448), (7960, 2643904), (8720, 2413472), (12128, 1735280), (12736, 1652440), (13952, 1508420), (15160, 1388224), (15920, 1321952), (17440, 1206736), (21691, 970240), (24256, 867640), (25472, 826220), (27904, 754210), (30320, 694112), (31840, 660976), (34880, 603368), (41311, 509440), (43382, 485120), (48512, 433820), (50944, 413110), (55808, 377105), (60640, 347056), (63680, 330488), (69760, 301684), (75421, 279040), (82622, 254720), (86764, 242560), (97024, 216910), (101888, 206555), (108455, 194048), (121280, 173528), (127360, 165244), (139520, 150842)]