20943769

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 26727680

約数和(自身を除く): 5783911

約数列:

[1, 7, 11, 77, 79, 121, 313, 553, 847, 869, 2191, 3443, 6083, 9559, 24101, 24727, 37873, 66913, 173089, 265111, 271997, 1903979, 2991967, 20943769]

約数ペア:

[(1, 20943769), (7, 2991967), (11, 1903979), (77, 271997), (79, 265111), (121, 173089), (313, 66913), (553, 37873), (847, 24727), (869, 24101), (2191, 9559), (3443, 6083)]