20000360

素因数分解:

$2^3\times 5^1\times {\mathrm{500009}}^1$

素因数の和:500020

約数の個数: 16

約数和(自身を含む): 45000900

約数和(自身を除く): 25000540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 500009, 1000018, 2000036, 2500045, 4000072, 5000090, 10000180, 20000360]

約数ペア:

[(1, 20000360), (2, 10000180), (4, 5000090), (5, 4000072), (8, 2500045), (10, 2000036), (20, 1000018), (40, 500009)]