78865520

素因数分解:

$2^4\times 5^1\times {\mathrm{985819}}^1$

素因数の和:985832

約数の個数: 20

約数和(自身を含む): 183362520

約数和(自身を除く): 104497000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985819, 1971638, 3943276, 4929095, 7886552, 9858190, 15773104, 19716380, 39432760, 78865520]

約数ペア:

[(1, 78865520), (2, 39432760), (4, 19716380), (5, 15773104), (8, 9858190), (10, 7886552), (16, 4929095), (20, 3943276), (40, 1971638), (80, 985819)]