68691640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{39937}}^1$

素因数の和:39991

約数の個数: 32

約数和(自身を含む): 158154480

約数和(自身を除く): 89462840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 39937, 79874, 159748, 199685, 319496, 399370, 798740, 1597480, 1717291, 3434582, 6869164, 8586455, 13738328, 17172910, 34345820, 68691640]

約数ペア:

[(1, 68691640), (2, 34345820), (4, 17172910), (5, 13738328), (8, 8586455), (10, 6869164), (20, 3434582), (40, 1717291), (43, 1597480), (86, 798740), (172, 399370), (215, 319496), (344, 199685), (430, 159748), (860, 79874), (1720, 39937)]