28640391

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{38651}}^1$

素因数の和:38686

約数の個数: 16

約数和(自身を含む): 43290240

約数和(自身を除く): 14649849

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 38651, 115953, 502463, 734369, 1507389, 2203107, 9546797, 28640391]

約数ペア:

[(1, 28640391), (3, 9546797), (13, 2203107), (19, 1507389), (39, 734369), (57, 502463), (247, 115953), (741, 38651)]