11122221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 16920576

約数和(自身を除く): 5798355

約数列:

[1, 3, 11, 33, 47, 71, 101, 141, 213, 303, 517, 781, 1111, 1551, 2343, 3333, 3337, 4747, 7171, 10011, 14241, 21513, 36707, 52217, 78881, 110121, 156651, 236643, 337037, 1011111, 3707407, 11122221]

約数ペア:

[(1, 11122221), (3, 3707407), (11, 1011111), (33, 337037), (47, 236643), (71, 156651), (101, 110121), (141, 78881), (213, 52217), (303, 36707), (517, 21513), (781, 14241), (1111, 10011), (1551, 7171), (2343, 4747), (3333, 3337)]