61821487

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 82723872

約数和(自身を除く): 20902385

約数列:

[1, 7, 13, 37, 43, 49, 61, 91, 259, 301, 427, 481, 559, 637, 793, 1591, 1813, 2107, 2257, 2623, 2989, 3367, 3913, 5551, 11137, 15799, 18361, 20683, 23569, 27391, 29341, 34099, 38857, 77959, 97051, 110593, 128527, 144781, 205387, 238693, 679357, 1013467, 1261663, 1437709, 1670851, 4755499, 8831641, 61821487]

約数ペア:

[(1, 61821487), (7, 8831641), (13, 4755499), (37, 1670851), (43, 1437709), (49, 1261663), (61, 1013467), (91, 679357), (259, 238693), (301, 205387), (427, 144781), (481, 128527), (559, 110593), (637, 97051), (793, 77959), (1591, 38857), (1813, 34099), (2107, 29341), (2257, 27391), (2623, 23569), (2989, 20683), (3367, 18361), (3913, 15799), (5551, 11137)]