17860220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{661}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 43151808

約数和(自身を除く): 25291588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 661, 772, 965, 1322, 1351, 1930, 2644, 2702, 3305, 3860, 4627, 5404, 6610, 6755, 9254, 13220, 13510, 18508, 23135, 27020, 46270, 92540, 127573, 255146, 510292, 637865, 893011, 1275730, 1786022, 2551460, 3572044, 4465055, 8930110, 17860220]

約数ペア:

[(1, 17860220), (2, 8930110), (4, 4465055), (5, 3572044), (7, 2551460), (10, 1786022), (14, 1275730), (20, 893011), (28, 637865), (35, 510292), (70, 255146), (140, 127573), (193, 92540), (386, 46270), (661, 27020), (772, 23135), (965, 18508), (1322, 13510), (1351, 13220), (1930, 9254), (2644, 6755), (2702, 6610), (3305, 5404), (3860, 4627)]