21465921

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{547}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 29179904

約数和(自身を除く): 7713983

約数列:

[1, 3, 103, 127, 309, 381, 547, 1641, 13081, 39243, 56341, 69469, 169023, 208407, 7155307, 21465921]

約数ペア:

[(1, 21465921), (3, 7155307), (103, 208407), (127, 169023), (309, 69469), (381, 56341), (547, 39243), (1641, 13081)]