21856543205

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1\times {\mathrm{14431}}^1$

素因数の和:14949

約数の個数: 32

約数和(自身を含む): 30327982080

約数和(自身を除く): 8471438875

約数列:

[1, 5, 7, 35, 109, 397, 545, 763, 1985, 2779, 3815, 13895, 14431, 43273, 72155, 101017, 216365, 302911, 505085, 1514555, 1572979, 5729107, 7864895, 11010853, 28645535, 40103749, 55054265, 200518745, 624472663, 3122363315, 4371308641, 21856543205]

約数ペア:

[(1, 21856543205), (5, 4371308641), (7, 3122363315), (35, 624472663), (109, 200518745), (397, 55054265), (545, 40103749), (763, 28645535), (1985, 11010853), (2779, 7864895), (3815, 5729107), (13895, 1572979), (14431, 1514555), (43273, 505085), (72155, 302911), (101017, 216365)]