20911396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{719}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 40037760

約数和(自身を除く): 19126364

約数列:

[1, 2, 4, 11, 22, 44, 661, 719, 1322, 1438, 2644, 2876, 7271, 7909, 14542, 15818, 29084, 31636, 475259, 950518, 1901036, 5227849, 10455698, 20911396]

約数ペア:

[(1, 20911396), (2, 10455698), (4, 5227849), (11, 1901036), (22, 950518), (44, 475259), (661, 31636), (719, 29084), (1322, 15818), (1438, 14542), (2644, 7909), (2876, 7271)]