21587877

素因数分解:

$3^7\times {\mathrm{9871}}^1$

素因数の和:9892

約数の個数: 16

約数和(自身を含む): 32380160

約数和(自身を除く): 10792283

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 9871, 29613, 88839, 266517, 799551, 2398653, 7195959, 21587877]

約数ペア:

[(1, 21587877), (3, 7195959), (9, 2398653), (27, 799551), (81, 266517), (243, 88839), (729, 29613), (2187, 9871)]