1268778820

素因数分解:

$2^2\times 5^1\times {\mathrm{63438941}}^1$

素因数の和:63438950

約数の個数: 12

約数和(自身を含む): 2664435564

約数和(自身を除く): 1395656744

約数列:

[1, 2, 4, 5, 10, 20, 63438941, 126877882, 253755764, 317194705, 634389410, 1268778820]

約数ペア:

[(1, 1268778820), (2, 634389410), (4, 317194705), (5, 253755764), (10, 126877882), (20, 63438941)]