21286815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129011}}^1$

素因数の和:129030

約数の個数: 16

約数和(自身を含む): 37155456

約数和(自身を除く): 15868641

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129011, 387033, 645055, 1419121, 1935165, 4257363, 7095605, 21286815]

約数ペア:

[(1, 21286815), (3, 7095605), (5, 4257363), (11, 1935165), (15, 1419121), (33, 645055), (55, 387033), (165, 129011)]