20411781

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1811}}^1$

素因数の和:1861

約数の個数: 24

約数和(自身を含む): 31151904

約数和(自身を除く): 10740123

約数列:

[1, 3, 13, 17, 39, 51, 221, 289, 663, 867, 1811, 3757, 5433, 11271, 23543, 30787, 70629, 92361, 400231, 523379, 1200693, 1570137, 6803927, 20411781]

約数ペア:

[(1, 20411781), (3, 6803927), (13, 1570137), (17, 1200693), (39, 523379), (51, 400231), (221, 92361), (289, 70629), (663, 30787), (867, 23543), (1811, 11271), (3757, 5433)]