21273261

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{4457}}^1$

素因数の和:4540

約数の個数: 16

約数和(自身を含む): 29815104

約数和(自身を除く): 8541843

約数列:

[1, 3, 37, 43, 111, 129, 1591, 4457, 4773, 13371, 164909, 191651, 494727, 574953, 7091087, 21273261]

約数ペア:

[(1, 21273261), (3, 7091087), (37, 574953), (43, 494727), (111, 191651), (129, 164909), (1591, 13371), (4457, 4773)]