20509300511

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{123661}}^1$

素因数の和:123759

約数の個数: 32

約数和(自身を含む): 26117414400

約数和(自身を除く): 5608113889

約数列:

[1, 7, 19, 29, 43, 133, 203, 301, 551, 817, 1247, 3857, 5719, 8729, 23693, 123661, 165851, 865627, 2349559, 3586169, 5317423, 16446913, 25103183, 37221961, 68137211, 101031037, 154205267, 476960477, 707217259, 1079436869, 2929900073, 20509300511]

約数ペア:

[(1, 20509300511), (7, 2929900073), (19, 1079436869), (29, 707217259), (43, 476960477), (133, 154205267), (203, 101031037), (301, 68137211), (551, 37221961), (817, 25103183), (1247, 16446913), (3857, 5317423), (5719, 3586169), (8729, 2349559), (23693, 865627), (123661, 165851)]