19959888905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1597}}^1\times {\mathrm{2011}}^1$

素因数の和:3737

約数の個数: 32

約数和(自身を含む): 26390164608

約数和(自身を除く): 6430275703

約数列:

[1, 5, 11, 55, 113, 565, 1243, 1597, 2011, 6215, 7985, 10055, 17567, 22121, 87835, 110605, 180461, 227243, 902305, 1136215, 1985071, 2499673, 3211567, 9925355, 12498365, 16057835, 35327237, 176636185, 362907071, 1814535355, 3991977781, 19959888905]

約数ペア:

[(1, 19959888905), (5, 3991977781), (11, 1814535355), (55, 362907071), (113, 176636185), (565, 35327237), (1243, 16057835), (1597, 12498365), (2011, 9925355), (6215, 3211567), (7985, 2499673), (10055, 1985071), (17567, 1136215), (22121, 902305), (87835, 227243), (110605, 180461)]