218613297

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{28837}}^1$

素因数の和:28885

約数の個数: 24

約数和(自身を含む): 351592896

約数和(自身を除く): 132979599

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 28837, 86511, 201859, 547903, 605577, 1643709, 3835321, 10410157, 11505963, 31230471, 72871099, 218613297]

約数ペア:

[(1, 218613297), (3, 72871099), (7, 31230471), (19, 11505963), (21, 10410157), (57, 3835321), (133, 1643709), (361, 605577), (399, 547903), (1083, 201859), (2527, 86511), (7581, 28837)]