21383661

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{1627}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 30814784

約数和(自身を除く): 9431123

約数列:

[1, 3, 13, 39, 337, 1011, 1627, 4381, 4881, 13143, 21151, 63453, 548299, 1644897, 7127887, 21383661]

約数ペア:

[(1, 21383661), (3, 7127887), (13, 1644897), (39, 548299), (337, 63453), (1011, 21151), (1627, 13143), (4381, 4881)]