20316807

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1637}}^1$

素因数の和:1847

約数の個数: 24

約数和(自身を含む): 33729696

約数和(自身を除く): 13412889

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1637, 1773, 4137, 4911, 11459, 12411, 14733, 34377, 103131, 322489, 967467, 2257423, 2902401, 6772269, 20316807]

約数ペア:

[(1, 20316807), (3, 6772269), (7, 2902401), (9, 2257423), (21, 967467), (63, 322489), (197, 103131), (591, 34377), (1379, 14733), (1637, 12411), (1773, 11459), (4137, 4911)]