20640543

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{8123}}^1$

素因数の和:8155

約数の個数: 24

約数和(自身を含む): 34575744

約数和(自身を除く): 13935201

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 8123, 24369, 56861, 89353, 170583, 268059, 625471, 982883, 1876413, 2948649, 6880181, 20640543]

約数ペア:

[(1, 20640543), (3, 6880181), (7, 2948649), (11, 1876413), (21, 982883), (33, 625471), (77, 268059), (121, 170583), (231, 89353), (363, 56861), (847, 24369), (2541, 8123)]