21904673

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1193}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 26057856

約数和(自身を除く): 4153183

約数列:

[1, 7, 43, 61, 301, 427, 1193, 2623, 8351, 18361, 51299, 72773, 359093, 509411, 3129239, 21904673]

約数ペア:

[(1, 21904673), (7, 3129239), (43, 509411), (61, 359093), (301, 72773), (427, 51299), (1193, 18361), (2623, 8351)]