18131260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129509}}^1$

素因数の和:129525

約数の個数: 24

約数和(自身を含む): 43515360

約数和(自身を除く): 25384100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129509, 259018, 518036, 647545, 906563, 1295090, 1813126, 2590180, 3626252, 4532815, 9065630, 18131260]

約数ペア:

[(1, 18131260), (2, 9065630), (4, 4532815), (5, 3626252), (7, 2590180), (10, 1813126), (14, 1295090), (20, 906563), (28, 647545), (35, 518036), (70, 259018), (140, 129509)]