21906951

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{701}}^1\times {\mathrm{947}}^1$

素因数の和:1662

約数の個数: 16

約数和(自身を含む): 31943808

約数和(自身を除く): 10036857

約数列:

[1, 3, 11, 33, 701, 947, 2103, 2841, 7711, 10417, 23133, 31251, 663847, 1991541, 7302317, 21906951]

約数ペア:

[(1, 21906951), (3, 7302317), (11, 1991541), (33, 663847), (701, 31251), (947, 23133), (2103, 10417), (2841, 7711)]