20998901

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{38959}}^1$

素因数の和:38984

約数の個数: 12

約数和(自身を含む): 26648640

約数和(自身を除く): 5649739

約数列:

[1, 7, 11, 49, 77, 539, 38959, 272713, 428549, 1908991, 2999843, 20998901]

約数ペア:

[(1, 20998901), (7, 2999843), (11, 1908991), (49, 428549), (77, 272713), (539, 38959)]