21533239

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5503}}^1$

素因数の和:5566

約数の個数: 16

約数和(自身を含む): 27123712

約数和(自身を除く): 5590473

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5503, 38521, 71539, 236629, 500773, 1656403, 3076177, 21533239]

約数ペア:

[(1, 21533239), (7, 3076177), (13, 1656403), (43, 500773), (91, 236629), (301, 71539), (559, 38521), (3913, 5503)]