21059819

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{409}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 23930880

約数和(自身を除く): 2871061

約数列:

[1, 11, 31, 151, 341, 409, 1661, 4499, 4681, 12679, 51491, 61759, 139469, 679349, 1914529, 21059819]

約数ペア:

[(1, 21059819), (11, 1914529), (31, 679349), (151, 139469), (341, 61759), (409, 51491), (1661, 12679), (4499, 4681)]