21709347

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13997}}^1$

素因数の和:14058

約数の個数: 16

約数和(自身を含む): 32251392

約数和(自身を除く): 10542045

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13997, 41991, 153967, 461901, 657859, 1973577, 7236449, 21709347]

約数ペア:

[(1, 21709347), (3, 7236449), (11, 1973577), (33, 657859), (47, 461901), (141, 153967), (517, 41991), (1551, 13997)]