81654800

素因数分解:

$2^4\times 5^2\times {\mathrm{204137}}^1$

素因数の和:204155

約数の個数: 30

約数和(自身を含む): 196176618

約数和(自身を除く): 114521818

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 204137, 408274, 816548, 1020685, 1633096, 2041370, 3266192, 4082740, 5103425, 8165480, 10206850, 16330960, 20413700, 40827400, 81654800]

約数ペア:

[(1, 81654800), (2, 40827400), (4, 20413700), (5, 16330960), (8, 10206850), (10, 8165480), (16, 5103425), (20, 4082740), (25, 3266192), (40, 2041370), (50, 1633096), (80, 1020685), (100, 816548), (200, 408274), (400, 204137)]