20664424

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 43614720

約数和(自身を除く): 22950296

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 127, 172, 254, 344, 473, 508, 946, 1016, 1397, 1849, 1892, 2794, 3698, 3784, 5461, 5588, 7396, 10922, 11176, 14792, 20339, 21844, 40678, 43688, 60071, 81356, 120142, 162712, 234823, 240284, 469646, 480568, 939292, 1878584, 2583053, 5166106, 10332212, 20664424]

約数ペア:

[(1, 20664424), (2, 10332212), (4, 5166106), (8, 2583053), (11, 1878584), (22, 939292), (43, 480568), (44, 469646), (86, 240284), (88, 234823), (127, 162712), (172, 120142), (254, 81356), (344, 60071), (473, 43688), (508, 40678), (946, 21844), (1016, 20339), (1397, 14792), (1849, 11176), (1892, 10922), (2794, 7396), (3698, 5588), (3784, 5461)]