20909151

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4751}}^1$

素因数の和:4923

約数の個数: 16

約数和(自身を含む): 31173120

約数和(自身を除く): 10263969

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4751, 14253, 42759, 128277, 774413, 2323239, 6969717, 20909151]

約数ペア:

[(1, 20909151), (3, 6969717), (9, 2323239), (27, 774413), (163, 128277), (489, 42759), (1467, 14253), (4401, 4751)]