18648020

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4733}}^1$

素因数の和:4939

約数の個数: 24

約数和(自身を含む): 39367944

約数和(自身を除く): 20719924

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4733, 9466, 18932, 23665, 47330, 94660, 932401, 1864802, 3729604, 4662005, 9324010, 18648020]

約数ペア:

[(1, 18648020), (2, 9324010), (4, 4662005), (5, 3729604), (10, 1864802), (20, 932401), (197, 94660), (394, 47330), (788, 23665), (985, 18932), (1970, 9466), (3940, 4733)]