19748911

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:180

約数の個数: 32

約数和(自身を含む): 25625600

約数和(自身を除く): 5876689

約数列:

[1, 7, 13, 43, 49, 91, 103, 301, 343, 559, 637, 721, 1339, 2107, 3913, 4429, 4459, 5047, 9373, 14749, 27391, 31003, 35329, 57577, 65611, 191737, 217021, 403039, 459277, 1519147, 2821273, 19748911]

約数ペア:

[(1, 19748911), (7, 2821273), (13, 1519147), (43, 459277), (49, 403039), (91, 217021), (103, 191737), (301, 65611), (343, 57577), (559, 35329), (637, 31003), (721, 27391), (1339, 14749), (2107, 9373), (3913, 5047), (4429, 4459)]