21142317

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7243}}^1$

素因数の和:7392

約数の個数: 16

約数和(自身を含む): 32453120

約数和(自身を除く): 11310803

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7243, 21729, 50701, 152103, 1006777, 3020331, 7047439, 21142317]

約数ペア:

[(1, 21142317), (3, 7047439), (7, 3020331), (21, 1006777), (139, 152103), (417, 50701), (973, 21729), (2919, 7243)]