2178939

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:199

約数の個数: 32

約数和(自身を含む): 3604480

約数和(自身を除く): 1425541

約数列:

[1, 3, 7, 19, 21, 43, 57, 127, 129, 133, 301, 381, 399, 817, 889, 903, 2413, 2451, 2667, 5461, 5719, 7239, 16383, 16891, 17157, 38227, 50673, 103759, 114681, 311277, 726313, 2178939]

約数ペア:

[(1, 2178939), (3, 726313), (7, 311277), (19, 114681), (21, 103759), (43, 50673), (57, 38227), (127, 17157), (129, 16891), (133, 16383), (301, 7239), (381, 5719), (399, 5461), (817, 2667), (889, 2451), (903, 2413)]