20376840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:427

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 48051960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 43, 44, 55, 60, 66, 86, 88, 110, 120, 129, 132, 165, 172, 215, 220, 258, 264, 330, 344, 359, 430, 440, 473, 516, 645, 660, 718, 860, 946, 1032, 1077, 1290, 1320, 1419, 1436, 1720, 1795, 1892, 2154, 2365, 2580, 2838, 2872, 3590, 3784, 3949, 4308, 4730, 5160, 5385, 5676, 7095, 7180, 7898, 8616, 9460, 10770, 11352, 11847, 14190, 14360, 15437, 15796, 18920, 19745, 21540, 23694, 28380, 30874, 31592, 39490, 43080, 46311, 47388, 56760, 59235, 61748, 77185, 78980, 92622, 94776, 118470, 123496, 154370, 157960, 169807, 185244, 231555, 236940, 308740, 339614, 370488, 463110, 473880, 509421, 617480, 679228, 849035, 926220, 1018842, 1358456, 1698070, 1852440, 2037684, 2547105, 3396140, 4075368, 5094210, 6792280, 10188420, 20376840]

約数ペア:

[(1, 20376840), (2, 10188420), (3, 6792280), (4, 5094210), (5, 4075368), (6, 3396140), (8, 2547105), (10, 2037684), (11, 1852440), (12, 1698070), (15, 1358456), (20, 1018842), (22, 926220), (24, 849035), (30, 679228), (33, 617480), (40, 509421), (43, 473880), (44, 463110), (55, 370488), (60, 339614), (66, 308740), (86, 236940), (88, 231555), (110, 185244), (120, 169807), (129, 157960), (132, 154370), (165, 123496), (172, 118470), (215, 94776), (220, 92622), (258, 78980), (264, 77185), (330, 61748), (344, 59235), (359, 56760), (430, 47388), (440, 46311), (473, 43080), (516, 39490), (645, 31592), (660, 30874), (718, 28380), (860, 23694), (946, 21540), (1032, 19745), (1077, 18920), (1290, 15796), (1320, 15437), (1419, 14360), (1436, 14190), (1720, 11847), (1795, 11352), (1892, 10770), (2154, 9460), (2365, 8616), (2580, 7898), (2838, 7180), (2872, 7095), (3590, 5676), (3784, 5385), (3949, 5160), (4308, 4730)]