81771998

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 159694848

約数和(自身を除く): 77922850

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 113, 127, 154, 226, 254, 259, 407, 518, 791, 814, 889, 1243, 1397, 1582, 1778, 2486, 2794, 2849, 4181, 4699, 5698, 8362, 8701, 9398, 9779, 14351, 17402, 19558, 28702, 29267, 32893, 45991, 51689, 58534, 65786, 91982, 100457, 103378, 157861, 200914, 315722, 321937, 361823, 530987, 643874, 723646, 1061974, 1105027, 2210054, 3716909, 5840857, 7433818, 11681714, 40885999, 81771998]

約数ペア:

[(1, 81771998), (2, 40885999), (7, 11681714), (11, 7433818), (14, 5840857), (22, 3716909), (37, 2210054), (74, 1105027), (77, 1061974), (113, 723646), (127, 643874), (154, 530987), (226, 361823), (254, 321937), (259, 315722), (407, 200914), (518, 157861), (791, 103378), (814, 100457), (889, 91982), (1243, 65786), (1397, 58534), (1582, 51689), (1778, 45991), (2486, 32893), (2794, 29267), (2849, 28702), (4181, 19558), (4699, 17402), (5698, 14351), (8362, 9779), (8701, 9398)]