8205121520

素因数分解:

$2^4\times 5^1\times {\mathrm{102564019}}^1$

素因数の和:102564032

約数の個数: 20

約数和(自身を含む): 19076907720

約数和(自身を除く): 10871786200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 102564019, 205128038, 410256076, 512820095, 820512152, 1025640190, 1641024304, 2051280380, 4102560760, 8205121520]

約数ペア:

[(1, 8205121520), (2, 4102560760), (4, 2051280380), (5, 1641024304), (8, 1025640190), (10, 820512152), (16, 512820095), (20, 410256076), (40, 205128038), (80, 102564019)]