21062881

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{673}}^1$

素因数の和:960

約数の個数: 16

約数和(自身を含む): 25622784

約数和(自身を除く): 4559903

約数列:

[1, 7, 17, 119, 263, 673, 1841, 4471, 4711, 11441, 31297, 80087, 176999, 1238993, 3008983, 21062881]

約数ペア:

[(1, 21062881), (7, 3008983), (17, 1238993), (119, 176999), (263, 80087), (673, 31297), (1841, 11441), (4471, 4711)]