20431287

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 30373200

約数和(自身を除く): 9941913

約数列:

[1, 3, 9, 59, 109, 177, 327, 353, 531, 981, 1059, 3177, 6431, 19293, 20827, 38477, 57879, 62481, 115431, 187443, 346293, 2270143, 6810429, 20431287]

約数ペア:

[(1, 20431287), (3, 6810429), (9, 2270143), (59, 346293), (109, 187443), (177, 115431), (327, 62481), (353, 57879), (531, 38477), (981, 20827), (1059, 19293), (3177, 6431)]