21495309

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13859}}^1$

素因数の和:13920

約数の個数: 16

約数和(自身を含む): 31933440

約数和(自身を除く): 10438131

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13859, 41577, 152449, 457347, 651373, 1954119, 7165103, 21495309]

約数ペア:

[(1, 21495309), (3, 7165103), (11, 1954119), (33, 651373), (47, 457347), (141, 152449), (517, 41577), (1551, 13859)]