21480693

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12809}}^1$

素因数の和:12868

約数の個数: 16

約数和(自身を含む): 31563840

約数和(自身を除く): 10083147

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12809, 38427, 166517, 499551, 550787, 1652361, 7160231, 21480693]

約数ペア:

[(1, 21480693), (3, 7160231), (13, 1652361), (39, 550787), (43, 499551), (129, 166517), (559, 38427), (1677, 12809)]