21305081

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1913}}^1$

素因数の和:2000

約数の個数: 16

約数和(自身を含む): 25601664

約数和(自身を除く): 4296583

約数列:

[1, 7, 37, 43, 259, 301, 1591, 1913, 11137, 13391, 70781, 82259, 495467, 575813, 3043583, 21305081]

約数ペア:

[(1, 21305081), (7, 3043583), (37, 575813), (43, 495467), (259, 82259), (301, 70781), (1591, 13391), (1913, 11137)]