81044920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{3919}}^1$

素因数の和:3988

約数の個数: 64

約数和(自身を含む): 203212800

約数和(自身を除く): 122167880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1880, 2068, 2585, 3919, 4136, 5170, 7838, 10340, 15676, 19595, 20680, 31352, 39190, 43109, 78380, 86218, 156760, 172436, 184193, 215545, 344872, 368386, 431090, 736772, 862180, 920965, 1473544, 1724360, 1841930, 2026123, 3683860, 4052246, 7367720, 8104492, 10130615, 16208984, 20261230, 40522460, 81044920]

約数ペア:

[(1, 81044920), (2, 40522460), (4, 20261230), (5, 16208984), (8, 10130615), (10, 8104492), (11, 7367720), (20, 4052246), (22, 3683860), (40, 2026123), (44, 1841930), (47, 1724360), (55, 1473544), (88, 920965), (94, 862180), (110, 736772), (188, 431090), (220, 368386), (235, 344872), (376, 215545), (440, 184193), (470, 172436), (517, 156760), (940, 86218), (1034, 78380), (1880, 43109), (2068, 39190), (2585, 31352), (3919, 20680), (4136, 19595), (5170, 15676), (7838, 10340)]