28971999

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1437

約数の個数: 40

約数和(自身を含む): 50835488

約数和(自身を除く): 21863489

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 1381, 2331, 2997, 4143, 6993, 9667, 12429, 20979, 29001, 37287, 51097, 87003, 111861, 153291, 261009, 357679, 459873, 783027, 1073037, 1379619, 3219111, 4138857, 9657333, 28971999]

約数ペア:

[(1, 28971999), (3, 9657333), (7, 4138857), (9, 3219111), (21, 1379619), (27, 1073037), (37, 783027), (63, 459873), (81, 357679), (111, 261009), (189, 153291), (259, 111861), (333, 87003), (567, 51097), (777, 37287), (999, 29001), (1381, 20979), (2331, 12429), (2997, 9667), (4143, 6993)]