666392080

素因数分解:

$2^4\times 5^1\times {\mathrm{8329901}}^1$

素因数の和:8329914

約数の個数: 20

約数和(自身を含む): 1549361772

約数和(自身を除く): 882969692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8329901, 16659802, 33319604, 41649505, 66639208, 83299010, 133278416, 166598020, 333196040, 666392080]

約数ペア:

[(1, 666392080), (2, 333196040), (4, 166598020), (5, 133278416), (8, 83299010), (10, 66639208), (16, 41649505), (20, 33319604), (40, 16659802), (80, 8329901)]