128421889

素因数分解:

${\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{643}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 136321920

約数和(自身を除く): 7900031

約数列:

[1, 29, 71, 97, 643, 2059, 2813, 6887, 18647, 45653, 62371, 199723, 1323937, 1808759, 4428341, 128421889]

約数ペア:

[(1, 128421889), (29, 4428341), (71, 1808759), (97, 1323937), (643, 199723), (2059, 62371), (2813, 45653), (6887, 18647)]