21890187

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{5393}}^1$

素因数の和:5451

約数の個数: 24

約数和(自身を含む): 35341488

約数和(自身を除く): 13451301

約数列:

[1, 3, 9, 11, 33, 41, 99, 123, 369, 451, 1353, 4059, 5393, 16179, 48537, 59323, 177969, 221113, 533907, 663339, 1990017, 2432243, 7296729, 21890187]

約数ペア:

[(1, 21890187), (3, 7296729), (9, 2432243), (11, 1990017), (33, 663339), (41, 533907), (99, 221113), (123, 177969), (369, 59323), (451, 48537), (1353, 16179), (4059, 5393)]