81995740

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{17903}}^1$

素因数の和:18141

約数の個数: 24

約数和(自身を含む): 172952640

約数和(自身を除く): 90956900

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 17903, 35806, 71612, 89515, 179030, 358060, 4099787, 8199574, 16399148, 20498935, 40997870, 81995740]

約数ペア:

[(1, 81995740), (2, 40997870), (4, 20498935), (5, 16399148), (10, 8199574), (20, 4099787), (229, 358060), (458, 179030), (916, 89515), (1145, 71612), (2290, 35806), (4580, 17903)]