21279405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{202661}}^1$

素因数の和:202676

約数の個数: 16

約数和(自身を含む): 38911104

約数和(自身を除く): 17631699

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 202661, 607983, 1013305, 1418627, 3039915, 4255881, 7093135, 21279405]

約数ペア:

[(1, 21279405), (3, 7093135), (5, 4255881), (7, 3039915), (15, 1418627), (21, 1013305), (35, 607983), (105, 202661)]