20005979824

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3118139}}^1$

素因数の和:3118548

約数の個数: 20

約数和(自身を含む): 38858260680

約数和(自身を除く): 18852280856

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 6416, 3118139, 6236278, 12472556, 24945112, 49890224, 1250373739, 2500747478, 5001494956, 10002989912, 20005979824]

約数ペア:

[(1, 20005979824), (2, 10002989912), (4, 5001494956), (8, 2500747478), (16, 1250373739), (401, 49890224), (802, 24945112), (1604, 12472556), (3208, 6236278), (6416, 3118139)]