20648901

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1759}}^1$

素因数の和:1825

約数の個数: 32

約数和(自身を含む): 34693120

約数和(自身を除く): 14044219

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1759, 3913, 5277, 11739, 12313, 22867, 36939, 68601, 75637, 160069, 226911, 480207, 529459, 983281, 1588377, 2949843, 6882967, 20648901]

約数ペア:

[(1, 20648901), (3, 6882967), (7, 2949843), (13, 1588377), (21, 983281), (39, 529459), (43, 480207), (91, 226911), (129, 160069), (273, 75637), (301, 68601), (559, 36939), (903, 22867), (1677, 12313), (1759, 11739), (3913, 5277)]