21986073

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3823}}^1$

素因数の和:3906

約数の個数: 20

約数和(自身を含む): 33314688

約数和(自身を除く): 11328615

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3823, 5751, 11469, 34407, 103221, 271433, 309663, 814299, 2442897, 7328691, 21986073]

約数ペア:

[(1, 21986073), (3, 7328691), (9, 2442897), (27, 814299), (71, 309663), (81, 271433), (213, 103221), (639, 34407), (1917, 11469), (3823, 5751)]