18915127

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1847}}^1$

素因数の和:1891

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 6365513

約数列:

[1, 7, 11, 19, 49, 77, 133, 209, 539, 931, 1463, 1847, 10241, 12929, 20317, 35093, 90503, 142219, 245651, 386023, 995533, 1719557, 2702161, 18915127]

約数ペア:

[(1, 18915127), (7, 2702161), (11, 1719557), (19, 995533), (49, 386023), (77, 245651), (133, 142219), (209, 90503), (539, 35093), (931, 20317), (1463, 12929), (1847, 10241)]