20181681

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{953}}^1$

素因数の和:1153

約数の個数: 24

約数和(自身を含む): 31600296

約数和(自身を除く): 11418615

約数列:

[1, 3, 9, 13, 39, 117, 181, 543, 953, 1629, 2353, 2859, 7059, 8577, 12389, 21177, 37167, 111501, 172493, 517479, 1552437, 2242409, 6727227, 20181681]

約数ペア:

[(1, 20181681), (3, 6727227), (9, 2242409), (13, 1552437), (39, 517479), (117, 172493), (181, 111501), (543, 37167), (953, 21177), (1629, 12389), (2353, 8577), (2859, 7059)]