21000879801

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{812759}}^1$

素因数の和:812811

約数の個数: 40

約数和(自身を含む): 35403825600

約数和(自身を除く): 14402945799

約数列:

[1, 3, 9, 11, 27, 29, 33, 81, 87, 99, 261, 297, 319, 783, 891, 957, 2349, 2871, 8613, 25839, 812759, 2438277, 7314831, 8940349, 21944493, 23570011, 26821047, 65833479, 70710033, 80463141, 212130099, 241389423, 259270121, 636390297, 724168269, 777810363, 1909170891, 2333431089, 7000293267, 21000879801]

約数ペア:

[(1, 21000879801), (3, 7000293267), (9, 2333431089), (11, 1909170891), (27, 777810363), (29, 724168269), (33, 636390297), (81, 259270121), (87, 241389423), (99, 212130099), (261, 80463141), (297, 70710033), (319, 65833479), (783, 26821047), (891, 23570011), (957, 21944493), (2349, 8940349), (2871, 7314831), (8613, 2438277), (25839, 812759)]