81586780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{1663}}^1$

素因数の和:1906

約数の個数: 48

約数和(自身を含む): 187858944

約数和(自身を除く): 106272164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 223, 446, 892, 1115, 1663, 2230, 2453, 3326, 4460, 4906, 6652, 8315, 9812, 12265, 16630, 18293, 24530, 33260, 36586, 49060, 73172, 91465, 182930, 365860, 370849, 741698, 1483396, 1854245, 3708490, 4079339, 7416980, 8158678, 16317356, 20396695, 40793390, 81586780]

約数ペア:

[(1, 81586780), (2, 40793390), (4, 20396695), (5, 16317356), (10, 8158678), (11, 7416980), (20, 4079339), (22, 3708490), (44, 1854245), (55, 1483396), (110, 741698), (220, 370849), (223, 365860), (446, 182930), (892, 91465), (1115, 73172), (1663, 49060), (2230, 36586), (2453, 33260), (3326, 24530), (4460, 18293), (4906, 16630), (6652, 12265), (8315, 9812)]