19681491

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{1889}}^1$

素因数の和:2066

約数の個数: 16

約数和(自身を含む): 27578880

約数和(自身を除く): 7897389

約数列:

[1, 3, 23, 69, 151, 453, 1889, 3473, 5667, 10419, 43447, 130341, 285239, 855717, 6560497, 19681491]

約数ペア:

[(1, 19681491), (3, 6560497), (23, 855717), (69, 285239), (151, 130341), (453, 43447), (1889, 10419), (3473, 5667)]