2019917979

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{351229}}^1$

素因数の和:351312

約数の個数: 20

約数和(自身を含む): 3059915760

約数和(自身を除く): 1039997781

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 351229, 1053687, 3161061, 9483183, 24937259, 28449549, 74811777, 224435331, 673305993, 2019917979]

約数ペア:

[(1, 2019917979), (3, 673305993), (9, 224435331), (27, 74811777), (71, 28449549), (81, 24937259), (213, 9483183), (639, 3161061), (1917, 1053687), (5751, 351229)]