81252241

素因数分解:

$7^4\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:858

約数の個数: 20

約数和(自身を含む): 97116272

約数和(自身を除く): 15864031

約数列:

[1, 7, 43, 49, 301, 343, 787, 2107, 2401, 5509, 14749, 33841, 38563, 103243, 236887, 269941, 1658209, 1889587, 11607463, 81252241]

約数ペア:

[(1, 81252241), (7, 11607463), (43, 1889587), (49, 1658209), (301, 269941), (343, 236887), (787, 103243), (2107, 38563), (2401, 33841), (5509, 14749)]