20771709

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23003}}^1$

素因数の和:23056

約数の個数: 16

約数和(自身を含む): 32389632

約数和(自身を除く): 11617923

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23003, 69009, 161021, 483063, 989129, 2967387, 6923903, 20771709]

約数ペア:

[(1, 20771709), (3, 6923903), (7, 2967387), (21, 989129), (43, 483063), (129, 161021), (301, 69009), (903, 23003)]