21157849

素因数分解:

${\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:157

約数の個数: 24

約数和(自身を含む): 24140160

約数和(自身を除く): 2982311

約数列:

[1, 19, 29, 43, 47, 361, 551, 817, 893, 1247, 1363, 2021, 10469, 15523, 16967, 23693, 25897, 38399, 58609, 450167, 492043, 729581, 1113571, 21157849]

約数ペア:

[(1, 21157849), (19, 1113571), (29, 729581), (43, 492043), (47, 450167), (361, 58609), (551, 38399), (817, 25897), (893, 23693), (1247, 16967), (1363, 15523), (2021, 10469)]