209711645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 319334400

約数和(自身を除く): 109622755

約数列:

[1, 5, 11, 13, 19, 43, 55, 65, 95, 143, 209, 215, 247, 359, 473, 559, 715, 817, 1045, 1235, 1795, 2365, 2717, 2795, 3949, 4085, 4667, 6149, 6821, 8987, 10621, 13585, 15437, 19745, 23335, 30745, 34105, 44935, 51337, 53105, 75031, 77185, 88673, 116831, 169807, 200681, 256685, 293303, 375155, 443365, 584155, 849035, 975403, 1003405, 1466515, 2207491, 3226333, 3812939, 4877015, 11037455, 16131665, 19064695, 41942329, 209711645]

約数ペア:

[(1, 209711645), (5, 41942329), (11, 19064695), (13, 16131665), (19, 11037455), (43, 4877015), (55, 3812939), (65, 3226333), (95, 2207491), (143, 1466515), (209, 1003405), (215, 975403), (247, 849035), (359, 584155), (473, 443365), (559, 375155), (715, 293303), (817, 256685), (1045, 200681), (1235, 169807), (1795, 116831), (2365, 88673), (2717, 77185), (2795, 75031), (3949, 53105), (4085, 51337), (4667, 44935), (6149, 34105), (6821, 30745), (8987, 23335), (10621, 19745), (13585, 15437)]