18509157020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8490439}}^1$

素因数の和:8490557

約数の個数: 24

約数和(自身を含む): 39225832800

約数和(自身を除く): 20716675780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8490439, 16980878, 33961756, 42452195, 84904390, 169808780, 925457851, 1850915702, 3701831404, 4627289255, 9254578510, 18509157020]

約数ペア:

[(1, 18509157020), (2, 9254578510), (4, 4627289255), (5, 3701831404), (10, 1850915702), (20, 925457851), (109, 169808780), (218, 84904390), (436, 42452195), (545, 33961756), (1090, 16980878), (2180, 8490439)]