21920361

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 31446624

約数和(自身を除く): 9526263

約数列:

[1, 3, 17, 51, 131, 193, 289, 393, 579, 867, 2227, 3281, 6681, 9843, 25283, 37859, 55777, 75849, 113577, 167331, 429811, 1289433, 7306787, 21920361]

約数ペア:

[(1, 21920361), (3, 7306787), (17, 1289433), (51, 429811), (131, 167331), (193, 113577), (289, 75849), (393, 55777), (579, 37859), (867, 25283), (2227, 9843), (3281, 6681)]