21855171

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{3761}}^1$

素因数の和:3926

約数の個数: 16

約数和(自身を含む): 31600800

約数和(自身を除く): 9745629

約数列:

[1, 3, 13, 39, 149, 447, 1937, 3761, 5811, 11283, 48893, 146679, 560389, 1681167, 7285057, 21855171]

約数ペア:

[(1, 21855171), (3, 7285057), (13, 1681167), (39, 560389), (149, 146679), (447, 48893), (1937, 11283), (3761, 5811)]