20877703

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{157}}^2$

素因数の和:343

約数の個数: 18

約数和(自身を含む): 26394648

約数和(自身を除く): 5516945

約数列:

[1, 7, 11, 77, 121, 157, 847, 1099, 1727, 12089, 18997, 24649, 132979, 172543, 271139, 1897973, 2982529, 20877703]

約数ペア:

[(1, 20877703), (7, 2982529), (11, 1897973), (77, 271139), (121, 172543), (157, 132979), (847, 24649), (1099, 18997), (1727, 12089)]