21939957

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{62507}}^1$

素因数の和:62529

約数の個数: 16

約数和(自身を含む): 35004480

約数和(自身を除く): 13064523

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 62507, 187521, 562563, 812591, 1687689, 2437773, 7313319, 21939957]

約数ペア:

[(1, 21939957), (3, 7313319), (9, 2437773), (13, 1687689), (27, 812591), (39, 562563), (117, 187521), (351, 62507)]