128920385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{7537}}^1$

素因数の和:7864

約数の個数: 16

約数和(自身を含む): 169333632

約数和(自身を除く): 40413247

約数列:

[1, 5, 11, 55, 311, 1555, 3421, 7537, 17105, 37685, 82907, 414535, 2344007, 11720035, 25784077, 128920385]

約数ペア:

[(1, 128920385), (5, 25784077), (11, 11720035), (55, 2344007), (311, 414535), (1555, 82907), (3421, 37685), (7537, 17105)]