31442859

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 56766528

約数和(自身を除く): 25323669

約数列:

[1, 3, 7, 9, 21, 37, 41, 47, 49, 63, 111, 123, 141, 147, 259, 287, 329, 333, 369, 423, 441, 777, 861, 987, 1517, 1739, 1813, 1927, 2009, 2303, 2331, 2583, 2961, 4551, 5217, 5439, 5781, 6027, 6909, 10619, 12173, 13489, 13653, 15651, 16317, 17343, 18081, 20727, 31857, 36519, 40467, 71299, 74333, 85211, 94423, 95571, 109557, 121401, 213897, 222999, 255633, 283269, 499093, 641691, 668997, 766899, 849807, 1497279, 3493651, 4491837, 10480953, 31442859]

約数ペア:

[(1, 31442859), (3, 10480953), (7, 4491837), (9, 3493651), (21, 1497279), (37, 849807), (41, 766899), (47, 668997), (49, 641691), (63, 499093), (111, 283269), (123, 255633), (141, 222999), (147, 213897), (259, 121401), (287, 109557), (329, 95571), (333, 94423), (369, 85211), (423, 74333), (441, 71299), (777, 40467), (861, 36519), (987, 31857), (1517, 20727), (1739, 18081), (1813, 17343), (1927, 16317), (2009, 15651), (2303, 13653), (2331, 13489), (2583, 12173), (2961, 10619), (4551, 6909), (5217, 6027), (5439, 5781)]