21587199

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1\times {\mathrm{509}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 29408640

約数和(自身を除く): 7821441

約数列:

[1, 3, 67, 201, 211, 509, 633, 1527, 14137, 34103, 42411, 102309, 107399, 322197, 7195733, 21587199]

約数ペア:

[(1, 21587199), (3, 7195733), (67, 322197), (201, 107399), (211, 102309), (509, 42411), (633, 34103), (1527, 14137)]