20818103680

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{10993}}^1$

素因数の和:11292

約数の個数: 128

約数和(自身を含む): 54499456800

約数和(自身を除く): 33681353120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 269, 320, 352, 440, 538, 640, 704, 880, 1076, 1345, 1408, 1760, 2152, 2690, 2959, 3520, 4304, 5380, 5918, 7040, 8608, 10760, 10993, 11836, 14795, 17216, 21520, 21986, 23672, 29590, 34432, 43040, 43972, 47344, 54965, 59180, 86080, 87944, 94688, 109930, 118360, 120923, 172160, 175888, 189376, 219860, 236720, 241846, 351776, 378752, 439720, 473440, 483692, 604615, 703552, 879440, 946880, 967384, 1209230, 1407104, 1758880, 1893760, 1934768, 2418460, 2957117, 3517760, 3869536, 4836920, 5914234, 7035520, 7739072, 9673840, 11828468, 14785585, 15478144, 19347680, 23656936, 29571170, 32528287, 38695360, 47313872, 59142340, 65056574, 77390720, 94627744, 118284680, 130113148, 162641435, 189255488, 236569360, 260226296, 325282870, 378510976, 473138720, 520452592, 650565740, 946277440, 1040905184, 1301131480, 1892554880, 2081810368, 2602262960, 4163620736, 5204525920, 10409051840, 20818103680]

約数ペア:

[(1, 20818103680), (2, 10409051840), (4, 5204525920), (5, 4163620736), (8, 2602262960), (10, 2081810368), (11, 1892554880), (16, 1301131480), (20, 1040905184), (22, 946277440), (32, 650565740), (40, 520452592), (44, 473138720), (55, 378510976), (64, 325282870), (80, 260226296), (88, 236569360), (110, 189255488), (128, 162641435), (160, 130113148), (176, 118284680), (220, 94627744), (269, 77390720), (320, 65056574), (352, 59142340), (440, 47313872), (538, 38695360), (640, 32528287), (704, 29571170), (880, 23656936), (1076, 19347680), (1345, 15478144), (1408, 14785585), (1760, 11828468), (2152, 9673840), (2690, 7739072), (2959, 7035520), (3520, 5914234), (4304, 4836920), (5380, 3869536), (5918, 3517760), (7040, 2957117), (8608, 2418460), (10760, 1934768), (10993, 1893760), (11836, 1758880), (14795, 1407104), (17216, 1209230), (21520, 967384), (21986, 946880), (23672, 879440), (29590, 703552), (34432, 604615), (43040, 483692), (43972, 473440), (47344, 439720), (54965, 378752), (59180, 351776), (86080, 241846), (87944, 236720), (94688, 219860), (109930, 189376), (118360, 175888), (120923, 172160)]