20128689

素因数分解:

$3^3\times 7^1\times {\mathrm{106501}}^1$

素因数の和:106517

約数の個数: 16

約数和(自身を含む): 34080640

約数和(自身を除く): 13951951

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 106501, 319503, 745507, 958509, 2236521, 2875527, 6709563, 20128689]

約数ペア:

[(1, 20128689), (3, 6709563), (7, 2875527), (9, 2236521), (21, 958509), (27, 745507), (63, 319503), (189, 106501)]