81225080

素因数分解:

$2^3\times 5^1\times {\mathrm{2030627}}^1$

素因数の和:2030638

約数の個数: 16

約数和(自身を含む): 182756520

約数和(自身を除く): 101531440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2030627, 4061254, 8122508, 10153135, 16245016, 20306270, 40612540, 81225080]

約数ペア:

[(1, 81225080), (2, 40612540), (4, 20306270), (5, 16245016), (8, 10153135), (10, 8122508), (20, 4061254), (40, 2030627)]