20907558

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:303

約数の個数: 80

約数和(自身を含む): 54362880

約数和(自身を除く): 33455322

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 103, 126, 162, 179, 189, 206, 309, 358, 378, 537, 567, 618, 721, 927, 1074, 1134, 1253, 1442, 1611, 1854, 2163, 2506, 2781, 3222, 3759, 4326, 4833, 5562, 6489, 7518, 8343, 9666, 11277, 12978, 14499, 16686, 18437, 19467, 22554, 28998, 33831, 36874, 38934, 55311, 58401, 67662, 101493, 110622, 116802, 129059, 165933, 202986, 258118, 331866, 387177, 497799, 774354, 995598, 1161531, 1493397, 2323062, 2986794, 3484593, 6969186, 10453779, 20907558]

約数ペア:

[(1, 20907558), (2, 10453779), (3, 6969186), (6, 3484593), (7, 2986794), (9, 2323062), (14, 1493397), (18, 1161531), (21, 995598), (27, 774354), (42, 497799), (54, 387177), (63, 331866), (81, 258118), (103, 202986), (126, 165933), (162, 129059), (179, 116802), (189, 110622), (206, 101493), (309, 67662), (358, 58401), (378, 55311), (537, 38934), (567, 36874), (618, 33831), (721, 28998), (927, 22554), (1074, 19467), (1134, 18437), (1253, 16686), (1442, 14499), (1611, 12978), (1854, 11277), (2163, 9666), (2506, 8343), (2781, 7518), (3222, 6489), (3759, 5562), (4326, 4833)]