31391260

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2441}}^1$

素因数の和:3093

約数の個数: 24

約数和(自身を含む): 66051216

約数和(自身を除く): 34659956

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2441, 2572, 3215, 4882, 6430, 9764, 12205, 12860, 24410, 48820, 1569563, 3139126, 6278252, 7847815, 15695630, 31391260]

約数ペア:

[(1, 31391260), (2, 15695630), (4, 7847815), (5, 6278252), (10, 3139126), (20, 1569563), (643, 48820), (1286, 24410), (2441, 12860), (2572, 12205), (3215, 9764), (4882, 6430)]