11997797

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:310

約数の個数: 20

約数和(自身を含む): 14789280

約数和(自身を除く): 2791483

約数列:

[1, 7, 19, 49, 133, 263, 343, 931, 1841, 2401, 4997, 6517, 12887, 34979, 45619, 90209, 244853, 631463, 1713971, 11997797]

約数ペア:

[(1, 11997797), (7, 1713971), (19, 631463), (49, 244853), (133, 90209), (263, 45619), (343, 34979), (931, 12887), (1841, 6517), (2401, 4997)]