21809391

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{3221}}^1$

素因数の和:3322

約数の個数: 16

約数和(自身を含む): 30364128

約数和(自身を除く): 8554737

約数列:

[1, 3, 37, 61, 111, 183, 2257, 3221, 6771, 9663, 119177, 196481, 357531, 589443, 7269797, 21809391]

約数ペア:

[(1, 21809391), (3, 7269797), (37, 589443), (61, 357531), (111, 196481), (183, 119177), (2257, 9663), (3221, 6771)]