21005593

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 24635520

約数和(自身を除く): 3629927

約数列:

[1, 7, 59, 181, 281, 413, 1267, 1967, 10679, 16579, 50861, 74753, 116053, 356027, 3000799, 21005593]

約数ペア:

[(1, 21005593), (7, 3000799), (59, 356027), (181, 116053), (281, 74753), (413, 50861), (1267, 16579), (1967, 10679)]