18331287

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 28562688

約数和(自身を除く): 10231401

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 643, 663, 731, 1677, 1929, 2193, 8359, 9503, 10931, 25077, 27649, 28509, 32793, 82947, 142103, 359437, 426309, 470033, 1078311, 1410099, 6110429, 18331287]

約数ペア:

[(1, 18331287), (3, 6110429), (13, 1410099), (17, 1078311), (39, 470033), (43, 426309), (51, 359437), (129, 142103), (221, 82947), (559, 32793), (643, 28509), (663, 27649), (731, 25077), (1677, 10931), (1929, 9503), (2193, 8359)]