21086948239

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{8344657}}^1$

素因数の和:8344702

約数の個数: 12

約数和(自身を含む): 25434517584

約数和(自身を除く): 4347569345

約数列:

[1, 7, 19, 133, 361, 2527, 8344657, 58412599, 158548483, 1109839381, 3012421177, 21086948239]

約数ペア:

[(1, 21086948239), (7, 3012421177), (19, 1109839381), (133, 158548483), (361, 58412599), (2527, 8344657)]