18981284

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4877}}^1$

素因数の和:5027

約数の個数: 24

約数和(自身を含む): 38243520

約数和(自身を除く): 19262236

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 4877, 9754, 19508, 34139, 68278, 136556, 677903, 1355806, 2711612, 4745321, 9490642, 18981284]

約数ペア:

[(1, 18981284), (2, 9490642), (4, 4745321), (7, 2711612), (14, 1355806), (28, 677903), (139, 136556), (278, 68278), (556, 34139), (973, 19508), (1946, 9754), (3892, 4877)]