20807765

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 27744864

約数和(自身を除く): 6937099

約数列:

[1, 5, 11, 55, 121, 163, 211, 605, 815, 1055, 1793, 2321, 8965, 11605, 19723, 25531, 34393, 98615, 127655, 171965, 378323, 1891615, 4161553, 20807765]

約数ペア:

[(1, 20807765), (5, 4161553), (11, 1891615), (55, 378323), (121, 171965), (163, 127655), (211, 98615), (605, 34393), (815, 25531), (1055, 19723), (1793, 11605), (2321, 8965)]