19978947

素因数分解:

$3^3\times {\mathrm{677}}^1\times {\mathrm{1093}}^1$

素因数の和:1779

約数の個数: 16

約数和(自身を含む): 29669280

約数和(自身を除く): 9690333

約数列:

[1, 3, 9, 27, 677, 1093, 2031, 3279, 6093, 9837, 18279, 29511, 739961, 2219883, 6659649, 19978947]

約数ペア:

[(1, 19978947), (3, 6659649), (9, 2219883), (27, 739961), (677, 29511), (1093, 18279), (2031, 9837), (3279, 6093)]