20078000

素因数分解:

$2^4\times 5^3\times {\mathrm{10039}}^1$

素因数の和:10062

約数の個数: 40

約数和(自身を含む): 48553440

約数和(自身を除く): 28475440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10039, 20078, 40156, 50195, 80312, 100390, 160624, 200780, 250975, 401560, 501950, 803120, 1003900, 1254875, 2007800, 2509750, 4015600, 5019500, 10039000, 20078000]

約数ペア:

[(1, 20078000), (2, 10039000), (4, 5019500), (5, 4015600), (8, 2509750), (10, 2007800), (16, 1254875), (20, 1003900), (25, 803120), (40, 501950), (50, 401560), (80, 250975), (100, 200780), (125, 160624), (200, 100390), (250, 80312), (400, 50195), (500, 40156), (1000, 20078), (2000, 10039)]