28143921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1999}}^1$

素因数の和:2053

約数の個数: 24

約数和(自身を含む): 42672000

約数和(自身を除く): 14528079

約数列:

[1, 3, 13, 19, 39, 57, 247, 361, 741, 1083, 1999, 4693, 5997, 14079, 25987, 37981, 77961, 113943, 493753, 721639, 1481259, 2164917, 9381307, 28143921]

約数ペア:

[(1, 28143921), (3, 9381307), (13, 2164917), (19, 1481259), (39, 721639), (57, 493753), (247, 113943), (361, 77961), (741, 37981), (1083, 25987), (1999, 14079), (4693, 5997)]