261566253

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{248401}}^1$

素因数の和:248426

約数の個数: 20

約数和(自身を含む): 420792988

約数和(自身を除く): 159226735

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 248401, 745203, 2235609, 3229213, 6706827, 9687639, 20120481, 29062917, 87188751, 261566253]

約数ペア:

[(1, 261566253), (3, 87188751), (9, 29062917), (13, 20120481), (27, 9687639), (39, 6706827), (81, 3229213), (117, 2235609), (351, 745203), (1053, 248401)]