21129684

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{40949}}^1$

素因数の和:40999

約数の個数: 24

約数和(自身を含む): 50450400

約数和(自身を除く): 29320716

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 40949, 81898, 122847, 163796, 245694, 491388, 1760807, 3521614, 5282421, 7043228, 10564842, 21129684]

約数ペア:

[(1, 21129684), (2, 10564842), (3, 7043228), (4, 5282421), (6, 3521614), (12, 1760807), (43, 491388), (86, 245694), (129, 163796), (172, 122847), (258, 81898), (516, 40949)]