18711620

素因数分解:

$2^2\times 5^1\times {\mathrm{935581}}^1$

素因数の和:935590

約数の個数: 12

約数和(自身を含む): 39294444

約数和(自身を除く): 20582824

約数列:

[1, 2, 4, 5, 10, 20, 935581, 1871162, 3742324, 4677905, 9355810, 18711620]

約数ペア:

[(1, 18711620), (2, 9355810), (4, 4677905), (5, 3742324), (10, 1871162), (20, 935581)]