19709879

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{643}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 23493120

約数和(自身を除く): 3783241

約数列:

[1, 7, 29, 151, 203, 643, 1057, 4379, 4501, 18647, 30653, 97093, 130529, 679651, 2815697, 19709879]

約数ペア:

[(1, 19709879), (7, 2815697), (29, 679651), (151, 130529), (203, 97093), (643, 30653), (1057, 18647), (4379, 4501)]