21012772

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{479}}^1\times {\mathrm{997}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 40239360

約数和(自身を除く): 19226588

約数列:

[1, 2, 4, 11, 22, 44, 479, 958, 997, 1916, 1994, 3988, 5269, 10538, 10967, 21076, 21934, 43868, 477563, 955126, 1910252, 5253193, 10506386, 21012772]

約数ペア:

[(1, 21012772), (2, 10506386), (4, 5253193), (11, 1910252), (22, 955126), (44, 477563), (479, 43868), (958, 21934), (997, 21076), (1916, 10967), (1994, 10538), (3988, 5269)]