81741440

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{683}}^1$

素因数の和:730

約数の個数: 128

約数和(自身を含む): 226048320

約数和(自身を除く): 144306880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 128, 136, 160, 170, 176, 187, 220, 272, 320, 340, 352, 374, 440, 544, 640, 680, 683, 704, 748, 880, 935, 1088, 1360, 1366, 1408, 1496, 1760, 1870, 2176, 2720, 2732, 2992, 3415, 3520, 3740, 5440, 5464, 5984, 6830, 7040, 7480, 7513, 10880, 10928, 11611, 11968, 13660, 14960, 15026, 21856, 23222, 23936, 27320, 29920, 30052, 37565, 43712, 46444, 54640, 58055, 59840, 60104, 75130, 87424, 92888, 109280, 116110, 119680, 120208, 127721, 150260, 185776, 218560, 232220, 240416, 255442, 300520, 371552, 437120, 464440, 480832, 510884, 601040, 638605, 743104, 928880, 961664, 1021768, 1202080, 1277210, 1486208, 1857760, 2043536, 2404160, 2554420, 3715520, 4087072, 4808320, 5108840, 7431040, 8174144, 10217680, 16348288, 20435360, 40870720, 81741440]

約数ペア:

[(1, 81741440), (2, 40870720), (4, 20435360), (5, 16348288), (8, 10217680), (10, 8174144), (11, 7431040), (16, 5108840), (17, 4808320), (20, 4087072), (22, 3715520), (32, 2554420), (34, 2404160), (40, 2043536), (44, 1857760), (55, 1486208), (64, 1277210), (68, 1202080), (80, 1021768), (85, 961664), (88, 928880), (110, 743104), (128, 638605), (136, 601040), (160, 510884), (170, 480832), (176, 464440), (187, 437120), (220, 371552), (272, 300520), (320, 255442), (340, 240416), (352, 232220), (374, 218560), (440, 185776), (544, 150260), (640, 127721), (680, 120208), (683, 119680), (704, 116110), (748, 109280), (880, 92888), (935, 87424), (1088, 75130), (1360, 60104), (1366, 59840), (1408, 58055), (1496, 54640), (1760, 46444), (1870, 43712), (2176, 37565), (2720, 30052), (2732, 29920), (2992, 27320), (3415, 23936), (3520, 23222), (3740, 21856), (5440, 15026), (5464, 14960), (5984, 13660), (6830, 11968), (7040, 11611), (7480, 10928), (7513, 10880)]