21071468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{478897}}^1$

素因数の和:478912

約数の個数: 12

約数和(自身を含む): 40227432

約数和(自身を除く): 19155964

約数列:

[1, 2, 4, 11, 22, 44, 478897, 957794, 1915588, 5267867, 10535734, 21071468]

約数ペア:

[(1, 21071468), (2, 10535734), (4, 5267867), (11, 1915588), (22, 957794), (44, 478897)]