20395144

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{293}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27867896

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 113, 154, 226, 293, 308, 452, 586, 616, 791, 904, 1172, 1243, 1582, 2051, 2344, 2486, 3164, 3223, 4102, 4972, 6328, 6446, 8204, 8701, 9944, 12892, 16408, 17402, 22561, 25784, 33109, 34804, 45122, 66218, 69608, 90244, 132436, 180488, 231763, 264872, 364199, 463526, 728398, 927052, 1456796, 1854104, 2549393, 2913592, 5098786, 10197572, 20395144]

約数ペア:

[(1, 20395144), (2, 10197572), (4, 5098786), (7, 2913592), (8, 2549393), (11, 1854104), (14, 1456796), (22, 927052), (28, 728398), (44, 463526), (56, 364199), (77, 264872), (88, 231763), (113, 180488), (154, 132436), (226, 90244), (293, 69608), (308, 66218), (452, 45122), (586, 34804), (616, 33109), (791, 25784), (904, 22561), (1172, 17402), (1243, 16408), (1582, 12892), (2051, 9944), (2344, 8701), (2486, 8204), (3164, 6446), (3223, 6328), (4102, 4972)]