81316655

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:887

約数の個数: 32

約数和(自身を含む): 115872768

約数和(自身を除く): 34556113

約数列:

[1, 5, 7, 35, 43, 71, 215, 301, 355, 497, 761, 1505, 2485, 3053, 3805, 5327, 15265, 21371, 26635, 32723, 54031, 106855, 163615, 229061, 270155, 378217, 1145305, 1891085, 2323333, 11616665, 16263331, 81316655]

約数ペア:

[(1, 81316655), (5, 16263331), (7, 11616665), (35, 2323333), (43, 1891085), (71, 1145305), (215, 378217), (301, 270155), (355, 229061), (497, 163615), (761, 106855), (1505, 54031), (2485, 32723), (3053, 26635), (3805, 21371), (5327, 15265)]