21901851

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{487}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 33496320

約数和(自身を除く): 11594469

約数列:

[1, 3, 9, 19, 57, 171, 263, 487, 789, 1461, 2367, 4383, 4997, 9253, 14991, 27759, 44973, 83277, 128081, 384243, 1152729, 2433539, 7300617, 21901851]

約数ペア:

[(1, 21901851), (3, 7300617), (9, 2433539), (19, 1152729), (57, 384243), (171, 128081), (263, 83277), (487, 44973), (789, 27759), (1461, 14991), (2367, 9253), (4383, 4997)]