221279305

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2161

約数の個数: 24

約数和(自身を含む): 289872000

約数和(自身を除く): 68592695

約数列:

[1, 5, 13, 65, 131, 169, 655, 845, 1703, 1999, 8515, 9995, 22139, 25987, 110695, 129935, 261869, 337831, 1309345, 1689155, 3404297, 17021485, 44255861, 221279305]

約数ペア:

[(1, 221279305), (5, 44255861), (13, 17021485), (65, 3404297), (131, 1689155), (169, 1309345), (655, 337831), (845, 261869), (1703, 129935), (1999, 110695), (8515, 25987), (9995, 22139)]