20257215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11161}}^1$

素因数の和:11191

約数の個数: 24

約数和(自身を含む): 35629104

約数和(自身を除く): 15371889

約数列:

[1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815, 11161, 33483, 55805, 122771, 167415, 368313, 613855, 1350481, 1841565, 4051443, 6752405, 20257215]

約数ペア:

[(1, 20257215), (3, 6752405), (5, 4051443), (11, 1841565), (15, 1350481), (33, 613855), (55, 368313), (121, 167415), (165, 122771), (363, 55805), (605, 33483), (1815, 11161)]