19709090

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{10889}}^1$

素因数の和:11077

約数の個数: 16

約数和(自身を含む): 35675640

約数和(自身を除く): 15966550

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 10889, 21778, 54445, 108890, 1970909, 3941818, 9854545, 19709090]

約数ペア:

[(1, 19709090), (2, 9854545), (5, 3941818), (10, 1970909), (181, 108890), (362, 54445), (905, 21778), (1810, 10889)]