21088011

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18947}}^1$

素因数の和:19010

約数の個数: 16

約数和(自身を含む): 32742144

約数和(自身を除く): 11654133

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18947, 56841, 132629, 397887, 1004191, 3012573, 7029337, 21088011]

約数ペア:

[(1, 21088011), (3, 7029337), (7, 3012573), (21, 1004191), (53, 397887), (159, 132629), (371, 56841), (1113, 18947)]