20739356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3391}}^1$

素因数の和:3545

約数の個数: 24

約数和(自身を含む): 39889920

約数和(自身を除く): 19150564

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3391, 6116, 6782, 13564, 37301, 74602, 149204, 471349, 942698, 1885396, 5184839, 10369678, 20739356]

約数ペア:

[(1, 20739356), (2, 10369678), (4, 5184839), (11, 1885396), (22, 942698), (44, 471349), (139, 149204), (278, 74602), (556, 37301), (1529, 13564), (3058, 6782), (3391, 6116)]