81860018

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{30341}}^1$

素因数の和:30433

約数の個数: 16

約数和(自身を含む): 131077440

約数和(自身を除く): 49217422

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 30341, 60682, 576479, 1152958, 2154211, 4308422, 40930009, 81860018]

約数ペア:

[(1, 81860018), (2, 40930009), (19, 4308422), (38, 2154211), (71, 1152958), (142, 576479), (1349, 60682), (2698, 30341)]