20691477

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:518

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11564523

約数列:

[1, 3, 9, 27, 31, 59, 93, 177, 279, 419, 531, 837, 1257, 1593, 1829, 3771, 5487, 11313, 12989, 16461, 24721, 38967, 49383, 74163, 116901, 222489, 350703, 667467, 766351, 2299053, 6897159, 20691477]

約数ペア:

[(1, 20691477), (3, 6897159), (9, 2299053), (27, 766351), (31, 667467), (59, 350703), (93, 222489), (177, 116901), (279, 74163), (419, 49383), (531, 38967), (837, 24721), (1257, 16461), (1593, 12989), (1829, 11313), (3771, 5487)]