21321465

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129221}}^1$

素因数の和:129240

約数の個数: 16

約数和(自身を含む): 37215936

約数和(自身を除く): 15894471

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129221, 387663, 646105, 1421431, 1938315, 4264293, 7107155, 21321465]

約数ペア:

[(1, 21321465), (3, 7107155), (5, 4264293), (11, 1938315), (15, 1421431), (33, 646105), (55, 387663), (165, 129221)]