21920259

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{14821}}^1$

素因数の和:14870

約数の個数: 16

約数和(自身を含む): 32015520

約数和(自身を除く): 10095261

約数列:

[1, 3, 17, 29, 51, 87, 493, 1479, 14821, 44463, 251957, 429809, 755871, 1289427, 7306753, 21920259]

約数ペア:

[(1, 21920259), (3, 7306753), (17, 1289427), (29, 755871), (51, 429809), (87, 251957), (493, 44463), (1479, 14821)]