21308427

素因数分解:

$3^5\times 7^1\times {\mathrm{12527}}^1$

素因数の和:12549

約数の個数: 24

約数和(自身を含む): 36481536

約数和(自身を除く): 15173109

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12527, 37581, 87689, 112743, 263067, 338229, 789201, 1014687, 2367603, 3044061, 7102809, 21308427]

約数ペア:

[(1, 21308427), (3, 7102809), (7, 3044061), (9, 2367603), (21, 1014687), (27, 789201), (63, 338229), (81, 263067), (189, 112743), (243, 87689), (567, 37581), (1701, 12527)]