81585860

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{9421}}^1$

素因数の和:9863

約数の個数: 24

約数和(自身を含む): 171744216

約数和(自身を除く): 90158356

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 4330, 8660, 9421, 18842, 37684, 47105, 94210, 188420, 4079293, 8158586, 16317172, 20396465, 40792930, 81585860]

約数ペア:

[(1, 81585860), (2, 40792930), (4, 20396465), (5, 16317172), (10, 8158586), (20, 4079293), (433, 188420), (866, 94210), (1732, 47105), (2165, 37684), (4330, 18842), (8660, 9421)]