20091918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 50600448

約数和(自身を除く): 30508530

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 154, 157, 231, 277, 314, 462, 471, 554, 831, 942, 1099, 1662, 1727, 1939, 2198, 3047, 3297, 3454, 3878, 5181, 5817, 6094, 6594, 9141, 10362, 11634, 12089, 18282, 21329, 24178, 36267, 42658, 43489, 63987, 72534, 86978, 127974, 130467, 260934, 304423, 478379, 608846, 913269, 956758, 1435137, 1826538, 2870274, 3348653, 6697306, 10045959, 20091918]

約数ペア:

[(1, 20091918), (2, 10045959), (3, 6697306), (6, 3348653), (7, 2870274), (11, 1826538), (14, 1435137), (21, 956758), (22, 913269), (33, 608846), (42, 478379), (66, 304423), (77, 260934), (154, 130467), (157, 127974), (231, 86978), (277, 72534), (314, 63987), (462, 43489), (471, 42658), (554, 36267), (831, 24178), (942, 21329), (1099, 18282), (1662, 12089), (1727, 11634), (1939, 10362), (2198, 9141), (3047, 6594), (3297, 6094), (3454, 5817), (3878, 5181)]