9720778820

素因数分解:

$2^2\times 5^1\times {\mathrm{486038941}}^1$

素因数の和:486038950

約数の個数: 12

約数和(自身を含む): 20413635564

約数和(自身を除く): 10692856744

約数列:

[1, 2, 4, 5, 10, 20, 486038941, 972077882, 1944155764, 2430194705, 4860389410, 9720778820]

約数ペア:

[(1, 9720778820), (2, 4860389410), (4, 2430194705), (5, 1944155764), (10, 972077882), (20, 486038941)]