85457090

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{78401}}^1$

素因数の和:78517

約数の個数: 16

約数和(自身を含む): 155235960

約数和(自身を除く): 69778870

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 78401, 156802, 392005, 784010, 8545709, 17091418, 42728545, 85457090]

約数ペア:

[(1, 85457090), (2, 42728545), (5, 17091418), (10, 8545709), (109, 784010), (218, 392005), (545, 156802), (1090, 78401)]