19511109

素因数分解:

$3^2\times {\mathrm{109}}^1\times {\mathrm{19889}}^1$

素因数の和:20004

約数の個数: 12

約数和(自身を含む): 28442700

約数和(自身を除く): 8931591

約数列:

[1, 3, 9, 109, 327, 981, 19889, 59667, 179001, 2167901, 6503703, 19511109]

約数ペア:

[(1, 19511109), (3, 6503703), (9, 2167901), (109, 179001), (327, 59667), (981, 19889)]