81861291

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{983}}^1$

素因数の和:1495

約数の個数: 24

約数和(自身を含む): 124849920

約数和(自身を除く): 42988629

約数列:

[1, 3, 9, 19, 57, 171, 487, 983, 1461, 2949, 4383, 8847, 9253, 18677, 27759, 56031, 83277, 168093, 478721, 1436163, 4308489, 9095699, 27287097, 81861291]

約数ペア:

[(1, 81861291), (3, 27287097), (9, 9095699), (19, 4308489), (57, 1436163), (171, 478721), (487, 168093), (983, 83277), (1461, 56031), (2949, 27759), (4383, 18677), (8847, 9253)]