20954800

素因数分解:

$2^4\times 5^2\times {\mathrm{52387}}^1$

素因数の和:52405

約数の個数: 30

約数和(自身を含む): 50344868

約数和(自身を除く): 29390068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52387, 104774, 209548, 261935, 419096, 523870, 838192, 1047740, 1309675, 2095480, 2619350, 4190960, 5238700, 10477400, 20954800]

約数ペア:

[(1, 20954800), (2, 10477400), (4, 5238700), (5, 4190960), (8, 2619350), (10, 2095480), (16, 1309675), (20, 1047740), (25, 838192), (40, 523870), (50, 419096), (80, 261935), (100, 209548), (200, 104774), (400, 52387)]