13971517

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 17556000

約数和(自身を除く): 3584483

約数列:

[1, 7, 19, 43, 49, 133, 301, 349, 817, 931, 2107, 2443, 5719, 6631, 15007, 17101, 40033, 46417, 105049, 285133, 324919, 735343, 1995931, 13971517]

約数ペア:

[(1, 13971517), (7, 1995931), (19, 735343), (43, 324919), (49, 285133), (133, 105049), (301, 46417), (349, 40033), (817, 17101), (931, 15007), (2107, 6631), (2443, 5719)]