18636969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 9748311

約数列:

[1, 3, 13, 23, 39, 69, 79, 237, 263, 299, 789, 897, 1027, 1817, 3081, 3419, 5451, 6049, 10257, 18147, 20777, 23621, 62331, 70863, 78637, 235911, 270101, 477871, 810303, 1433613, 6212323, 18636969]

約数ペア:

[(1, 18636969), (3, 6212323), (13, 1433613), (23, 810303), (39, 477871), (69, 270101), (79, 235911), (237, 78637), (263, 70863), (299, 62331), (789, 23621), (897, 20777), (1027, 18147), (1817, 10257), (3081, 6049), (3419, 5451)]