81206800

素因数分解:

$2^4\times 5^2\times {\mathrm{203017}}^1$

素因数の和:203035

約数の個数: 30

約数和(自身を含む): 195100298

約数和(自身を除く): 113893498

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203017, 406034, 812068, 1015085, 1624136, 2030170, 3248272, 4060340, 5075425, 8120680, 10150850, 16241360, 20301700, 40603400, 81206800]

約数ペア:

[(1, 81206800), (2, 40603400), (4, 20301700), (5, 16241360), (8, 10150850), (10, 8120680), (16, 5075425), (20, 4060340), (25, 3248272), (40, 2030170), (50, 1624136), (80, 1015085), (100, 812068), (200, 406034), (400, 203017)]