20111819

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{7621}}^1$

素因数の和:7670

約数の個数: 16

約数和(自身を含む): 25609920

約数和(自身を除く): 5498101

約数列:

[1, 7, 13, 29, 91, 203, 377, 2639, 7621, 53347, 99073, 221009, 693511, 1547063, 2873117, 20111819]

約数ペア:

[(1, 20111819), (7, 2873117), (13, 1547063), (29, 693511), (91, 221009), (203, 99073), (377, 53347), (2639, 7621)]