21012103

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 24534016

約数和(自身を除く): 3521913

約数列:

[1, 7, 103, 151, 193, 721, 1057, 1351, 15553, 19879, 29143, 108871, 139153, 204001, 3001729, 21012103]

約数ペア:

[(1, 21012103), (7, 3001729), (103, 204001), (151, 139153), (193, 108871), (721, 29143), (1057, 19879), (1351, 15553)]