18967851

素因数分解:

$3^8\times 7^2\times {\mathrm{59}}^1$

素因数の和:97

約数の個数: 54

約数和(自身を含む): 33656220

約数和(自身を除く): 14688369

約数列:

[1, 3, 7, 9, 21, 27, 49, 59, 63, 81, 147, 177, 189, 243, 413, 441, 531, 567, 729, 1239, 1323, 1593, 1701, 2187, 2891, 3717, 3969, 4779, 5103, 6561, 8673, 11151, 11907, 14337, 15309, 26019, 33453, 35721, 43011, 45927, 78057, 100359, 107163, 129033, 234171, 301077, 321489, 387099, 702513, 903231, 2107539, 2709693, 6322617, 18967851]

約数ペア:

[(1, 18967851), (3, 6322617), (7, 2709693), (9, 2107539), (21, 903231), (27, 702513), (49, 387099), (59, 321489), (63, 301077), (81, 234171), (147, 129033), (177, 107163), (189, 100359), (243, 78057), (413, 45927), (441, 43011), (531, 35721), (567, 33453), (729, 26019), (1239, 15309), (1323, 14337), (1593, 11907), (1701, 11151), (2187, 8673), (2891, 6561), (3717, 5103), (3969, 4779)]