18916360

素因数分解:

$2^3\times 5^1\times {\mathrm{472909}}^1$

素因数の和:472920

約数の個数: 16

約数和(自身を含む): 42561900

約数和(自身を除く): 23645540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472909, 945818, 1891636, 2364545, 3783272, 4729090, 9458180, 18916360]

約数ペア:

[(1, 18916360), (2, 9458180), (4, 4729090), (5, 3783272), (8, 2364545), (10, 1891636), (20, 945818), (40, 472909)]