18745520

素因数分解:

$2^4\times 5^1\times {\mathrm{234319}}^1$

素因数の和:234332

約数の個数: 20

約数和(自身を含む): 43583520

約数和(自身を除く): 24838000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 234319, 468638, 937276, 1171595, 1874552, 2343190, 3749104, 4686380, 9372760, 18745520]

約数ペア:

[(1, 18745520), (2, 9372760), (4, 4686380), (5, 3749104), (8, 2343190), (10, 1874552), (16, 1171595), (20, 937276), (40, 468638), (80, 234319)]