20003841

素因数分解:

$3^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:204

約数の個数: 60

約数和(自身を含む): 35597716

約数和(自身を除く): 15593875

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 121, 143, 157, 297, 351, 363, 429, 471, 891, 1053, 1089, 1287, 1413, 1573, 1727, 2041, 3267, 3861, 4239, 4719, 5181, 6123, 9801, 11583, 12717, 14157, 15543, 18369, 18997, 22451, 42471, 46629, 55107, 56991, 67353, 127413, 139887, 165321, 170973, 202059, 246961, 512919, 606177, 740883, 1538757, 1818531, 2222649, 6667947, 20003841]

約数ペア:

[(1, 20003841), (3, 6667947), (9, 2222649), (11, 1818531), (13, 1538757), (27, 740883), (33, 606177), (39, 512919), (81, 246961), (99, 202059), (117, 170973), (121, 165321), (143, 139887), (157, 127413), (297, 67353), (351, 56991), (363, 55107), (429, 46629), (471, 42471), (891, 22451), (1053, 18997), (1089, 18369), (1287, 15543), (1413, 14157), (1573, 12717), (1727, 11583), (2041, 9801), (3267, 6123), (3861, 5181), (4239, 4719)]