21359261

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{6451}}^1$

素因数の和:6512

約数の個数: 16

約数和(自身を含む): 27253248

約数和(自身を除く): 5893987

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 6451, 45157, 70961, 277393, 496727, 1941751, 3051323, 21359261]

約数ペア:

[(1, 21359261), (7, 3051323), (11, 1941751), (43, 496727), (77, 277393), (301, 70961), (473, 45157), (3311, 6451)]