28559979

素因数分解:

$3^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1103}}^1$

素因数の和:1256

約数の個数: 32

約数和(自身を含む): 48752640

約数和(自身を除く): 20192661

約数列:

[1, 3, 7, 9, 21, 27, 63, 137, 189, 411, 959, 1103, 1233, 2877, 3309, 3699, 7721, 8631, 9927, 23163, 25893, 29781, 69489, 151111, 208467, 453333, 1057777, 1359999, 3173331, 4079997, 9519993, 28559979]

約数ペア:

[(1, 28559979), (3, 9519993), (7, 4079997), (9, 3173331), (21, 1359999), (27, 1057777), (63, 453333), (137, 208467), (189, 151111), (411, 69489), (959, 29781), (1103, 25893), (1233, 23163), (2877, 9927), (3309, 8631), (3699, 7721)]