18944037

素因数分解:

$3^5\times 7^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 34690656

約数和(自身を除く): 15746619

約数列:

[1, 3, 7, 9, 21, 27, 37, 43, 49, 63, 81, 111, 129, 147, 189, 243, 259, 301, 333, 387, 441, 567, 777, 903, 999, 1161, 1323, 1591, 1701, 1813, 2107, 2331, 2709, 2997, 3483, 3969, 4773, 5439, 6321, 6993, 8127, 8991, 10449, 11137, 11907, 14319, 16317, 18963, 20979, 24381, 33411, 42957, 48951, 56889, 62937, 73143, 77959, 100233, 128871, 146853, 170667, 233877, 300699, 386613, 440559, 512001, 701631, 902097, 2104893, 2706291, 6314679, 18944037]

約数ペア:

[(1, 18944037), (3, 6314679), (7, 2706291), (9, 2104893), (21, 902097), (27, 701631), (37, 512001), (43, 440559), (49, 386613), (63, 300699), (81, 233877), (111, 170667), (129, 146853), (147, 128871), (189, 100233), (243, 77959), (259, 73143), (301, 62937), (333, 56889), (387, 48951), (441, 42957), (567, 33411), (777, 24381), (903, 20979), (999, 18963), (1161, 16317), (1323, 14319), (1591, 11907), (1701, 11137), (1813, 10449), (2107, 8991), (2331, 8127), (2709, 6993), (2997, 6321), (3483, 5439), (3969, 4773)]