18891639

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2647}}^1$

素因数の和:2727

約数の個数: 24

約数和(自身を含む): 29880032

約数和(自身を除く): 10988393

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2647, 7137, 7941, 23823, 34411, 103233, 161467, 309699, 484401, 1453203, 2099071, 6297213, 18891639]

約数ペア:

[(1, 18891639), (3, 6297213), (9, 2099071), (13, 1453203), (39, 484401), (61, 309699), (117, 161467), (183, 103233), (549, 34411), (793, 23823), (2379, 7941), (2647, 7137)]