11987755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4289}}^1$

素因数の和:4350

約数の個数: 16

約数和(自身を含む): 15855840

約数和(自身を除く): 3868085

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 4289, 21445, 55757, 184427, 278785, 922135, 2397551, 11987755]

約数ペア:

[(1, 11987755), (5, 2397551), (13, 922135), (43, 278785), (65, 184427), (215, 55757), (559, 21445), (2795, 4289)]