21197451

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{15667}}^1$

素因数の和:15722

約数の個数: 16

約数和(自身を含む): 31586688

約数和(自身を除く): 10389237

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 15667, 47001, 172337, 517011, 642347, 1927041, 7065817, 21197451]

約数ペア:

[(1, 21197451), (3, 7065817), (11, 1927041), (33, 642347), (41, 517011), (123, 172337), (451, 47001), (1353, 15667)]