81968019

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{2111}}^1$

素因数の和:2207

約数の個数: 24

約数和(自身を含む): 127936512

約数和(自身を除く): 45968493

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 1849, 2111, 5547, 6333, 12943, 14777, 38829, 44331, 90773, 272319, 635411, 1906233, 3903239, 11709717, 27322673, 81968019]

約数ペア:

[(1, 81968019), (3, 27322673), (7, 11709717), (21, 3903239), (43, 1906233), (129, 635411), (301, 272319), (903, 90773), (1849, 44331), (2111, 38829), (5547, 14777), (6333, 12943)]