131217640

素因数分解:

$2^3\times 5^1\times {\mathrm{3280441}}^1$

素因数の和:3280452

約数の個数: 16

約数和(自身を含む): 295239780

約数和(自身を除く): 164022140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3280441, 6560882, 13121764, 16402205, 26243528, 32804410, 65608820, 131217640]

約数ペア:

[(1, 131217640), (2, 65608820), (4, 32804410), (5, 26243528), (8, 16402205), (10, 13121764), (20, 6560882), (40, 3280441)]