20797478

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{1663}}^1$

素因数の和:1728

約数の個数: 24

約数和(自身を含む): 34714368

約数和(自身を除く): 13916890

約数列:

[1, 2, 13, 26, 37, 74, 169, 338, 481, 962, 1663, 3326, 6253, 12506, 21619, 43238, 61531, 123062, 281047, 562094, 799903, 1599806, 10398739, 20797478]

約数ペア:

[(1, 20797478), (2, 10398739), (13, 1599806), (26, 799903), (37, 562094), (74, 281047), (169, 123062), (338, 61531), (481, 43238), (962, 21619), (1663, 12506), (3326, 6253)]