21181059

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 31477680

約数和(自身を除く): 10296621

約数列:

[1, 3, 9, 59, 113, 177, 339, 353, 531, 1017, 1059, 3177, 6667, 20001, 20827, 39889, 60003, 62481, 119667, 187443, 359001, 2353451, 7060353, 21181059]

約数ペア:

[(1, 21181059), (3, 7060353), (9, 2353451), (59, 359001), (113, 187443), (177, 119667), (339, 62481), (353, 60003), (531, 39889), (1017, 20827), (1059, 20001), (3177, 6667)]