805280360

素因数分解:

$2^3\times 5^1\times {\mathrm{20132009}}^1$

素因数の和:20132020

約数の個数: 16

約数和(自身を含む): 1811880900

約数和(自身を除く): 1006600540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20132009, 40264018, 80528036, 100660045, 161056072, 201320090, 402640180, 805280360]

約数ペア:

[(1, 805280360), (2, 402640180), (4, 201320090), (5, 161056072), (8, 100660045), (10, 80528036), (20, 40264018), (40, 20132009)]