18418780

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4057}}^1$

素因数の和:4293

約数の個数: 24

約数和(自身を含む): 38859408

約数和(自身を除く): 20440628

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4057, 4540, 8114, 16228, 20285, 40570, 81140, 920939, 1841878, 3683756, 4604695, 9209390, 18418780]

約数ペア:

[(1, 18418780), (2, 9209390), (4, 4604695), (5, 3683756), (10, 1841878), (20, 920939), (227, 81140), (454, 40570), (908, 20285), (1135, 16228), (2270, 8114), (4057, 4540)]