19803391

素因数分解:

${\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:342

約数の個数: 16

約数和(自身を含む): 21385728

約数和(自身を除く): 1582337

約数列:

[1, 23, 67, 71, 181, 1541, 1633, 4163, 4757, 12127, 12851, 109411, 278921, 295573, 861017, 19803391]

約数ペア:

[(1, 19803391), (23, 861017), (67, 295573), (71, 278921), (181, 109411), (1541, 12851), (1633, 12127), (4163, 4757)]