21722181

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12953}}^1$

素因数の和:13012

約数の個数: 16

約数和(自身を含む): 31918656

約数和(自身を除く): 10196475

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12953, 38859, 168389, 505167, 556979, 1670937, 7240727, 21722181]

約数ペア:

[(1, 21722181), (3, 7240727), (13, 1670937), (39, 556979), (43, 505167), (129, 168389), (559, 38859), (1677, 12953)]