18900920

素因数分解:

$2^3\times 5^1\times {\mathrm{472523}}^1$

素因数の和:472534

約数の個数: 16

約数和(自身を含む): 42527160

約数和(自身を除く): 23626240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472523, 945046, 1890092, 2362615, 3780184, 4725230, 9450460, 18900920]

約数ペア:

[(1, 18900920), (2, 9450460), (4, 4725230), (5, 3780184), (8, 2362615), (10, 1890092), (20, 945046), (40, 472523)]