21439561

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{479}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 25320960

約数和(自身を除く): 3881399

約数列:

[1, 11, 13, 143, 313, 479, 3443, 4069, 5269, 6227, 44759, 68497, 149927, 1649197, 1949051, 21439561]

約数ペア:

[(1, 21439561), (11, 1949051), (13, 1649197), (143, 149927), (313, 68497), (479, 44759), (3443, 6227), (4069, 5269)]