20811615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126131}}^1$

素因数の和:126150

約数の個数: 16

約数和(自身を含む): 36326016

約数和(自身を除く): 15514401

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126131, 378393, 630655, 1387441, 1891965, 4162323, 6937205, 20811615]

約数ペア:

[(1, 20811615), (3, 6937205), (5, 4162323), (11, 1891965), (15, 1387441), (33, 630655), (55, 378393), (165, 126131)]