31321845

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16187}}^1$

素因数の和:16241

約数の個数: 24

約数和(自身を含む): 55557216

約数和(自身を除く): 24235371

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 16187, 48561, 80935, 145683, 242805, 696041, 728415, 2088123, 3480205, 6264369, 10440615, 31321845]

約数ペア:

[(1, 31321845), (3, 10440615), (5, 6264369), (9, 3480205), (15, 2088123), (43, 728415), (45, 696041), (129, 242805), (215, 145683), (387, 80935), (645, 48561), (1935, 16187)]