809931440

素因数分解:

$2^4\times 5^1\times {\mathrm{10124143}}^1$

素因数の和:10124156

約数の個数: 20

約数和(自身を含む): 1883090784

約数和(自身を除く): 1073159344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10124143, 20248286, 40496572, 50620715, 80993144, 101241430, 161986288, 202482860, 404965720, 809931440]

約数ペア:

[(1, 809931440), (2, 404965720), (4, 202482860), (5, 161986288), (8, 101241430), (10, 80993144), (16, 50620715), (20, 40496572), (40, 20248286), (80, 10124143)]