20565115

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 25170336

約数和(自身を除く): 4605221

約数列:

[1, 5, 101, 193, 211, 505, 965, 1055, 19493, 21311, 40723, 97465, 106555, 203615, 4113023, 20565115]

約数ペア:

[(1, 20565115), (5, 4113023), (101, 203615), (193, 106555), (211, 97465), (505, 40723), (965, 21311), (1055, 19493)]