20018383

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{521}}^1$

素因数の和:1038

約数の個数: 16

約数和(自身を含む): 25056000

約数和(自身を除く): 5037617

約数列:

[1, 7, 11, 77, 499, 521, 3493, 3647, 5489, 5731, 38423, 40117, 259979, 1819853, 2859769, 20018383]

約数ペア:

[(1, 20018383), (7, 2859769), (11, 1819853), (77, 259979), (499, 40117), (521, 38423), (3493, 5731), (3647, 5489)]