21556766

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19997}}^1$

素因数の和:20024

約数の個数: 24

約数和(自身を含む): 41035896

約数和(自身を除く): 19479130

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19997, 39994, 139979, 219967, 279958, 439934, 979853, 1539769, 1959706, 3079538, 10778383, 21556766]

約数ペア:

[(1, 21556766), (2, 10778383), (7, 3079538), (11, 1959706), (14, 1539769), (22, 979853), (49, 439934), (77, 279958), (98, 219967), (154, 139979), (539, 39994), (1078, 19997)]