21550510

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4909}}^1$

素因数の和:5355

約数の個数: 16

約数和(自身を含む): 38887200

約数和(自身を除く): 17336690

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4390, 4909, 9818, 24545, 49090, 2155051, 4310102, 10775255, 21550510]

約数ペア:

[(1, 21550510), (2, 10775255), (5, 4310102), (10, 2155051), (439, 49090), (878, 24545), (2195, 9818), (4390, 4909)]