20781629

素因数分解:

${\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 24131520

約数和(自身を除く): 3349891

約数列:

[1, 11, 41, 59, 71, 121, 451, 649, 781, 2419, 2911, 4189, 4961, 7139, 8591, 26609, 32021, 46079, 171749, 292699, 352231, 506869, 1889239, 20781629]

約数ペア:

[(1, 20781629), (11, 1889239), (41, 506869), (59, 352231), (71, 292699), (121, 171749), (451, 46079), (649, 32021), (781, 26609), (2419, 8591), (2911, 7139), (4189, 4961)]