21143397

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{2087}}^1$

素因数の和:2408

約数の個数: 16

約数和(自身を含む): 30868992

約数和(自身を除く): 9725595

約数列:

[1, 3, 11, 33, 307, 921, 2087, 3377, 6261, 10131, 22957, 68871, 640709, 1922127, 7047799, 21143397]

約数ペア:

[(1, 21143397), (3, 7047799), (11, 1922127), (33, 640709), (307, 68871), (921, 22957), (2087, 10131), (3377, 6261)]