21129136

素因数分解:

$2^4\times 7^1\times {\mathrm{188653}}^1$

素因数の和:188668

約数の個数: 20

約数和(自身を含む): 46786192

約数和(自身を除く): 25657056

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 188653, 377306, 754612, 1320571, 1509224, 2641142, 3018448, 5282284, 10564568, 21129136]

約数ペア:

[(1, 21129136), (2, 10564568), (4, 5282284), (7, 3018448), (8, 2641142), (14, 1509224), (16, 1320571), (28, 754612), (56, 377306), (112, 188653)]