19890891

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{293}}^1\times {\mathrm{397}}^1$

素因数の和:715

約数の個数: 24

約数和(自身を含む): 30423120

約数和(自身を除く): 10532229

約数列:

[1, 3, 9, 19, 57, 171, 293, 397, 879, 1191, 2637, 3573, 5567, 7543, 16701, 22629, 50103, 67887, 116321, 348963, 1046889, 2210099, 6630297, 19890891]

約数ペア:

[(1, 19890891), (3, 6630297), (9, 2210099), (19, 1046889), (57, 348963), (171, 116321), (293, 67887), (397, 50103), (879, 22629), (1191, 16701), (2637, 7543), (3573, 5567)]