19929663

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13103}}^1$

素因数の和:13135

約数の個数: 18

約数和(自身を含む): 31174416

約数和(自身を除く): 11244753

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13103, 39309, 117927, 170339, 511017, 1533051, 2214407, 6643221, 19929663]

約数ペア:

[(1, 19929663), (3, 6643221), (9, 2214407), (13, 1533051), (39, 511017), (117, 170339), (169, 117927), (507, 39309), (1521, 13103)]