71809759

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 87648288

約数和(自身を除く): 15838529

約数列:

[1, 7, 19, 133, 157, 181, 361, 1099, 1267, 2527, 2983, 3439, 20881, 24073, 28417, 56677, 65341, 198919, 396739, 457387, 539923, 3779461, 10258537, 71809759]

約数ペア:

[(1, 71809759), (7, 10258537), (19, 3779461), (133, 539923), (157, 457387), (181, 396739), (361, 198919), (1099, 65341), (1267, 56677), (2527, 28417), (2983, 24073), (3439, 20881)]