20791281

素因数分解:

$3^1\times 7^1\times {\mathrm{761}}^1\times {\mathrm{1301}}^1$

素因数の和:2072

約数の個数: 16

約数和(自身を含む): 31747968

約数和(自身を除く): 10956687

約数列:

[1, 3, 7, 21, 761, 1301, 2283, 3903, 5327, 9107, 15981, 27321, 990061, 2970183, 6930427, 20791281]

約数ペア:

[(1, 20791281), (3, 6930427), (7, 2970183), (21, 990061), (761, 27321), (1301, 15981), (2283, 9107), (3903, 5327)]