21304821895

素因数分解:

$5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{5688871}}^1$

素因数の和:5688990

約数の個数: 16

約数和(自身を含む): 29491112448

約数和(自身を除く): 8186290553

約数列:

[1, 5, 7, 35, 107, 535, 749, 3745, 5688871, 28444355, 39822097, 199110485, 608709197, 3043545985, 4260964379, 21304821895]

約数ペア:

[(1, 21304821895), (5, 4260964379), (7, 3043545985), (35, 608709197), (107, 199110485), (535, 39822097), (749, 28444355), (3745, 5688871)]