21531579

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{2087}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 30401280

約数和(自身を除く): 8869701

約数列:

[1, 3, 19, 57, 181, 543, 2087, 3439, 6261, 10317, 39653, 118959, 377747, 1133241, 7177193, 21531579]

約数ペア:

[(1, 21531579), (3, 7177193), (19, 1133241), (57, 377747), (181, 118959), (543, 39653), (2087, 10317), (3439, 6261)]