20718863540

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{389}}^1\times {\mathrm{8563}}^1$

素因数の和:9272

約数の個数: 48

約数和(自身を含む): 43766835840

約数和(自身を除く): 23047972300

約数列:

[1, 2, 4, 5, 10, 20, 311, 389, 622, 778, 1244, 1555, 1556, 1945, 3110, 3890, 6220, 7780, 8563, 17126, 34252, 42815, 85630, 120979, 171260, 241958, 483916, 604895, 1209790, 2419580, 2663093, 3331007, 5326186, 6662014, 10652372, 13315465, 13324028, 16655035, 26630930, 33310070, 53261860, 66620140, 1035943177, 2071886354, 4143772708, 5179715885, 10359431770, 20718863540]

約数ペア:

[(1, 20718863540), (2, 10359431770), (4, 5179715885), (5, 4143772708), (10, 2071886354), (20, 1035943177), (311, 66620140), (389, 53261860), (622, 33310070), (778, 26630930), (1244, 16655035), (1555, 13324028), (1556, 13315465), (1945, 10652372), (3110, 6662014), (3890, 5326186), (6220, 3331007), (7780, 2663093), (8563, 2419580), (17126, 1209790), (34252, 604895), (42815, 483916), (85630, 241958), (120979, 171260)]