20027997

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2003}}^1$

素因数の和:2121

約数の個数: 24

約数和(自身を含む): 31887648

約数和(自身を除く): 11859651

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 2003, 3333, 6009, 9999, 18027, 22033, 66099, 198297, 202303, 606909, 1820727, 2225333, 6675999, 20027997]

約数ペア:

[(1, 20027997), (3, 6675999), (9, 2225333), (11, 1820727), (33, 606909), (99, 202303), (101, 198297), (303, 66099), (909, 22033), (1111, 18027), (2003, 9999), (3333, 6009)]