387712899

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{18481}}^1$

素因数の和:18537

約数の個数: 40

約数和(自身を含む): 679841888

約数和(自身を除く): 292128989

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 2331, 2997, 6993, 18481, 20979, 55443, 129367, 166329, 388101, 498987, 683797, 1164303, 1496961, 2051391, 3492909, 4786579, 6154173, 10478727, 14359737, 18462519, 43079211, 55387557, 129237633, 387712899]

約数ペア:

[(1, 387712899), (3, 129237633), (7, 55387557), (9, 43079211), (21, 18462519), (27, 14359737), (37, 10478727), (63, 6154173), (81, 4786579), (111, 3492909), (189, 2051391), (259, 1496961), (333, 1164303), (567, 683797), (777, 498987), (999, 388101), (2331, 166329), (2997, 129367), (6993, 55443), (18481, 20979)]