20389385

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{1657}}^1$

素因数の和:1792

約数の個数: 16

約数和(自身を含む): 25785216

約数和(自身を除く): 5395831

約数列:

[1, 5, 23, 107, 115, 535, 1657, 2461, 8285, 12305, 38111, 177299, 190555, 886495, 4077877, 20389385]

約数ペア:

[(1, 20389385), (5, 4077877), (23, 886495), (107, 190555), (115, 177299), (535, 38111), (1657, 12305), (2461, 8285)]