19747143

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{12983}}^1$

素因数の和:13015

約数の個数: 18

約数和(自身を含む): 30888936

約数和(自身を除く): 11141793

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 12983, 38949, 116847, 168779, 506337, 1519011, 2194127, 6582381, 19747143]

約数ペア:

[(1, 19747143), (3, 6582381), (9, 2194127), (13, 1519011), (39, 506337), (117, 168779), (169, 116847), (507, 38949), (1521, 12983)]