20512019896

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{499903}}^1$

素因数の和:500155

約数の個数: 32

約数和(自身を含む): 40312258560

約数和(自身を除く): 19800238664

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 223, 446, 892, 1784, 5129, 10258, 20516, 41032, 499903, 999806, 1999612, 3999224, 11497769, 22995538, 45991076, 91982152, 111478369, 222956738, 445913476, 891826952, 2564002487, 5128004974, 10256009948, 20512019896]

約数ペア:

[(1, 20512019896), (2, 10256009948), (4, 5128004974), (8, 2564002487), (23, 891826952), (46, 445913476), (92, 222956738), (184, 111478369), (223, 91982152), (446, 45991076), (892, 22995538), (1784, 11497769), (5129, 3999224), (10258, 1999612), (20516, 999806), (41032, 499903)]