80980720

素因数分解:

$2^4\times 5^1\times {\mathrm{1012259}}^1$

素因数の和:1012272

約数の個数: 20

約数和(自身を含む): 188280360

約数和(自身を除く): 107299640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1012259, 2024518, 4049036, 5061295, 8098072, 10122590, 16196144, 20245180, 40490360, 80980720]

約数ペア:

[(1, 80980720), (2, 40490360), (4, 20245180), (5, 16196144), (8, 10122590), (10, 8098072), (16, 5061295), (20, 4049036), (40, 2024518), (80, 1012259)]