20980239

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{9337}}^1$

素因数の和:9454

約数の個数: 16

約数和(自身を含む): 32272128

約数和(自身を除く): 11291889

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 9337, 28011, 65359, 196077, 999059, 2997177, 6993413, 20980239]

約数ペア:

[(1, 20980239), (3, 6993413), (7, 2997177), (21, 999059), (107, 196077), (321, 65359), (749, 28011), (2247, 9337)]