20913009

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31543}}^1$

素因数の和:31576

約数の個数: 16

約数和(自身を含む): 31796352

約数和(自身を除く): 10883343

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 31543, 94629, 410059, 536231, 1230177, 1608693, 6971003, 20913009]

約数ペア:

[(1, 20913009), (3, 6971003), (13, 1608693), (17, 1230177), (39, 536231), (51, 410059), (221, 94629), (663, 31543)]