21380926

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{193}}^2$

素因数の和:436

約数の個数: 24

約数和(自身を含む): 37742544

約数和(自身を除く): 16361618

約数列:

[1, 2, 7, 14, 41, 82, 193, 287, 386, 574, 1351, 2702, 7913, 15826, 37249, 55391, 74498, 110782, 260743, 521486, 1527209, 3054418, 10690463, 21380926]

約数ペア:

[(1, 21380926), (2, 10690463), (7, 3054418), (14, 1527209), (41, 521486), (82, 260743), (193, 110782), (287, 74498), (386, 55391), (574, 37249), (1351, 15826), (2702, 7913)]