128873187

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:785

約数の個数: 40

約数和(自身を含む): 201857040

約数和(自身を除く): 72983853

約数列:

[1, 3, 9, 27, 29, 81, 83, 87, 249, 261, 661, 747, 783, 1983, 2241, 2349, 2407, 5949, 6723, 7221, 17847, 19169, 21663, 53541, 54863, 57507, 64989, 164589, 172521, 194967, 493767, 517563, 1481301, 1552689, 1591027, 4443903, 4773081, 14319243, 42957729, 128873187]

約数ペア:

[(1, 128873187), (3, 42957729), (9, 14319243), (27, 4773081), (29, 4443903), (81, 1591027), (83, 1552689), (87, 1481301), (249, 517563), (261, 493767), (661, 194967), (747, 172521), (783, 164589), (1983, 64989), (2241, 57507), (2349, 54863), (2407, 53541), (5949, 21663), (6723, 19169), (7221, 17847)]