81993569

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 100510848

約数和(自身を除く): 18517279

約数列:

[1, 7, 19, 71, 133, 361, 457, 497, 1349, 2527, 3199, 8683, 9443, 25631, 32447, 60781, 164977, 179417, 227129, 616493, 1154839, 4315451, 11713367, 81993569]

約数ペア:

[(1, 81993569), (7, 11713367), (19, 4315451), (71, 1154839), (133, 616493), (361, 227129), (457, 179417), (497, 164977), (1349, 60781), (2527, 32447), (3199, 25631), (8683, 9443)]