128814889

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 161792000

約数和(自身を除く): 32977111

約数列:

[1, 7, 19, 31, 133, 157, 199, 217, 589, 1099, 1393, 2983, 3781, 4123, 4867, 6169, 20881, 26467, 31243, 34069, 43183, 92473, 117211, 218701, 593617, 647311, 820477, 968533, 4155319, 6779731, 18402127, 128814889]

約数ペア:

[(1, 128814889), (7, 18402127), (19, 6779731), (31, 4155319), (133, 968533), (157, 820477), (199, 647311), (217, 593617), (589, 218701), (1099, 117211), (1393, 92473), (2983, 43183), (3781, 34069), (4123, 31243), (4867, 26467), (6169, 20881)]