28991109

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{311}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 46485504

約数和(自身を除く): 17494395

約数列:

[1, 3, 7, 21, 23, 69, 161, 193, 311, 483, 579, 933, 1351, 2177, 4053, 4439, 6531, 7153, 13317, 21459, 31073, 50071, 60023, 93219, 150213, 180069, 420161, 1260483, 1380529, 4141587, 9663703, 28991109]

約数ペア:

[(1, 28991109), (3, 9663703), (7, 4141587), (21, 1380529), (23, 1260483), (69, 420161), (161, 180069), (193, 150213), (311, 93219), (483, 60023), (579, 50071), (933, 31073), (1351, 21459), (2177, 13317), (4053, 7153), (4439, 6531)]