21071012

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{72161}}^1$

素因数の和:72238

約数の個数: 12

約数和(自身を含む): 37379916

約数和(自身を除く): 16308904

約数列:

[1, 2, 4, 73, 146, 292, 72161, 144322, 288644, 5267753, 10535506, 21071012]

約数ペア:

[(1, 21071012), (2, 10535506), (4, 5267753), (73, 288644), (146, 144322), (292, 72161)]