1728778820

素因数分解:

$2^2\times 5^1\times {\mathrm{86438941}}^1$

素因数の和:86438950

約数の個数: 12

約数和(自身を含む): 3630435564

約数和(自身を除く): 1901656744

約数列:

[1, 2, 4, 5, 10, 20, 86438941, 172877882, 345755764, 432194705, 864389410, 1728778820]

約数ペア:

[(1, 1728778820), (2, 864389410), (4, 432194705), (5, 345755764), (10, 172877882), (20, 86438941)]