20885723

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:338

約数の個数: 16

約数和(自身を含む): 22471680

約数和(自身を除く): 1585957

約数列:

[1, 31, 37, 131, 139, 1147, 4061, 4309, 4847, 5143, 18209, 150257, 159433, 564479, 673733, 20885723]

約数ペア:

[(1, 20885723), (31, 673733), (37, 564479), (131, 159433), (139, 150257), (1147, 18209), (4061, 5143), (4309, 4847)]