21085188

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12641}}^1$

素因数の和:12787

約数の個数: 24

約数和(自身を含む): 49556640

約数和(自身を除く): 28471452

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12641, 25282, 37923, 50564, 75846, 151692, 1757099, 3514198, 5271297, 7028396, 10542594, 21085188]

約数ペア:

[(1, 21085188), (2, 10542594), (3, 7028396), (4, 5271297), (6, 3514198), (12, 1757099), (139, 151692), (278, 75846), (417, 50564), (556, 37923), (834, 25282), (1668, 12641)]