18767943

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{881}}^1$

素因数の和:1156

約数の個数: 20

約数和(自身を含む): 28174608

約数和(自身を除く): 9406665

約数列:

[1, 3, 9, 27, 81, 263, 789, 881, 2367, 2643, 7101, 7929, 21303, 23787, 71361, 231703, 695109, 2085327, 6255981, 18767943]

約数ペア:

[(1, 18767943), (3, 6255981), (9, 2085327), (27, 695109), (81, 231703), (263, 71361), (789, 23787), (881, 21303), (2367, 7929), (2643, 7101)]