20387752

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1439}}^1$

素因数の和:1486

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29378648

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 23, 28, 44, 46, 56, 77, 88, 92, 154, 161, 184, 253, 308, 322, 506, 616, 644, 1012, 1288, 1439, 1771, 2024, 2878, 3542, 5756, 7084, 10073, 11512, 14168, 15829, 20146, 31658, 33097, 40292, 63316, 66194, 80584, 110803, 126632, 132388, 221606, 231679, 264776, 364067, 443212, 463358, 728134, 886424, 926716, 1456268, 1853432, 2548469, 2912536, 5096938, 10193876, 20387752]

約数ペア:

[(1, 20387752), (2, 10193876), (4, 5096938), (7, 2912536), (8, 2548469), (11, 1853432), (14, 1456268), (22, 926716), (23, 886424), (28, 728134), (44, 463358), (46, 443212), (56, 364067), (77, 264776), (88, 231679), (92, 221606), (154, 132388), (161, 126632), (184, 110803), (253, 80584), (308, 66194), (322, 63316), (506, 40292), (616, 33097), (644, 31658), (1012, 20146), (1288, 15829), (1439, 14168), (1771, 11512), (2024, 10073), (2878, 7084), (3542, 5756)]