18561939

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 28114944

約数和(自身を除く): 9553005

約数列:

[1, 3, 11, 33, 43, 103, 127, 129, 309, 381, 473, 1133, 1397, 1419, 3399, 4191, 4429, 5461, 13081, 13287, 16383, 39243, 48719, 60071, 143891, 146157, 180213, 431673, 562483, 1687449, 6187313, 18561939]

約数ペア:

[(1, 18561939), (3, 6187313), (11, 1687449), (33, 562483), (43, 431673), (103, 180213), (127, 146157), (129, 143891), (309, 60071), (381, 48719), (473, 39243), (1133, 16383), (1397, 13287), (1419, 13081), (3399, 5461), (4191, 4429)]