20390123

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 23405760

約数和(自身を除く): 3015637

約数列:

[1, 13, 17, 221, 257, 359, 3341, 4369, 4667, 6103, 56797, 79339, 92263, 1199419, 1568471, 20390123]

約数ペア:

[(1, 20390123), (13, 1568471), (17, 1199419), (221, 92263), (257, 79339), (359, 56797), (3341, 6103), (4369, 4667)]