20403859

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5531}}^1$

素因数の和:5586

約数の個数: 16

約数和(自身を含む): 25491456

約数和(自身を除く): 5087597

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5531, 38717, 94027, 171461, 658189, 1200227, 2914837, 20403859]

約数ペア:

[(1, 20403859), (7, 2914837), (17, 1200227), (31, 658189), (119, 171461), (217, 94027), (527, 38717), (3689, 5531)]