90991780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{2143}}^1$

素因数の和:2356

約数の個数: 48

約数和(自身を含む): 209631744

約数和(自身を除く): 118639964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 193, 220, 386, 772, 965, 1930, 2123, 2143, 3860, 4246, 4286, 8492, 8572, 10615, 10715, 21230, 21430, 23573, 42460, 42860, 47146, 94292, 117865, 235730, 413599, 471460, 827198, 1654396, 2067995, 4135990, 4549589, 8271980, 9099178, 18198356, 22747945, 45495890, 90991780]

約数ペア:

[(1, 90991780), (2, 45495890), (4, 22747945), (5, 18198356), (10, 9099178), (11, 8271980), (20, 4549589), (22, 4135990), (44, 2067995), (55, 1654396), (110, 827198), (193, 471460), (220, 413599), (386, 235730), (772, 117865), (965, 94292), (1930, 47146), (2123, 42860), (2143, 42460), (3860, 23573), (4246, 21430), (4286, 21230), (8492, 10715), (8572, 10615)]