18128740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129491}}^1$

素因数の和:129507

約数の個数: 24

約数和(自身を含む): 43509312

約数和(自身を除く): 25380572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129491, 258982, 517964, 647455, 906437, 1294910, 1812874, 2589820, 3625748, 4532185, 9064370, 18128740]

約数ペア:

[(1, 18128740), (2, 9064370), (4, 4532185), (5, 3625748), (7, 2589820), (10, 1812874), (14, 1294910), (20, 906437), (28, 647455), (35, 517964), (70, 258982), (140, 129491)]