21381315

素因数分解:

$3^1\times 5^1\times {\mathrm{683}}^1\times {\mathrm{2087}}^1$

素因数の和:2778

約数の個数: 16

約数和(自身を含む): 34276608

約数和(自身を除く): 12895293

約数列:

[1, 3, 5, 15, 683, 2049, 2087, 3415, 6261, 10245, 10435, 31305, 1425421, 4276263, 7127105, 21381315]

約数ペア:

[(1, 21381315), (3, 7127105), (5, 4276263), (15, 1425421), (683, 31305), (2049, 10435), (2087, 10245), (3415, 6261)]