20684419

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{9817}}^1$

素因数の和:9874

約数の個数: 12

約数和(自身を含む): 24623544

約数和(自身を除く): 3939125

約数列:

[1, 7, 43, 49, 301, 2107, 9817, 68719, 422131, 481033, 2954917, 20684419]

約数ペア:

[(1, 20684419), (7, 2954917), (43, 481033), (49, 422131), (301, 68719), (2107, 9817)]