208897143

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109313}}^1$

素因数の和:109343

約数の個数: 24

約数和(自身を含む): 348930288

約数和(自身を除く): 140033145

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 109313, 327939, 765191, 1421069, 2295573, 4263207, 5356337, 9947483, 16069011, 29842449, 69632381, 208897143]

約数ペア:

[(1, 208897143), (3, 69632381), (7, 29842449), (13, 16069011), (21, 9947483), (39, 5356337), (49, 4263207), (91, 2295573), (147, 1421069), (273, 765191), (637, 327939), (1911, 109313)]