21081435

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10111}}^1$

素因数の和:10258

約数の個数: 16

約数和(自身を含む): 33976320

約数和(自身を除く): 12894885

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 10111, 30333, 50555, 151665, 1405429, 4216287, 7027145, 21081435]

約数ペア:

[(1, 21081435), (3, 7027145), (5, 4216287), (15, 1405429), (139, 151665), (417, 50555), (695, 30333), (2085, 10111)]