18905379

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{881}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 7512285

約数列:

[1, 3, 23, 69, 311, 881, 933, 2643, 7153, 20263, 21459, 60789, 273991, 821973, 6301793, 18905379]

約数ペア:

[(1, 18905379), (3, 6301793), (23, 821973), (69, 273991), (311, 60789), (881, 21459), (933, 20263), (2643, 7153)]