21241791

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12627009

約数列:

[1, 3, 9, 19, 27, 47, 57, 141, 171, 423, 513, 881, 893, 1269, 2643, 2679, 7929, 8037, 16739, 23787, 24111, 41407, 50217, 124221, 150651, 372663, 451953, 786733, 1117989, 2360199, 7080597, 21241791]

約数ペア:

[(1, 21241791), (3, 7080597), (9, 2360199), (19, 1117989), (27, 786733), (47, 451953), (57, 372663), (141, 150651), (171, 124221), (423, 50217), (513, 41407), (881, 24111), (893, 23787), (1269, 16739), (2643, 8037), (2679, 7929)]