21881655

素因数分解:

$3^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1123}}^1$

素因数の和:1567

約数の個数: 24

約数和(自身を含む): 38049648

約数和(自身を除く): 16167993

約数列:

[1, 3, 5, 9, 15, 45, 433, 1123, 1299, 2165, 3369, 3897, 5615, 6495, 10107, 16845, 19485, 50535, 486259, 1458777, 2431295, 4376331, 7293885, 21881655]

約数ペア:

[(1, 21881655), (3, 7293885), (5, 4376331), (9, 2431295), (15, 1458777), (45, 486259), (433, 50535), (1123, 19485), (1299, 16845), (2165, 10107), (3369, 6495), (3897, 5615)]