20292020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{751}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 49018368

約数和(自身を除く): 28726348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 751, 772, 965, 1351, 1502, 1930, 2702, 3004, 3755, 3860, 5257, 5404, 6755, 7510, 10514, 13510, 15020, 21028, 26285, 27020, 52570, 105140, 144943, 289886, 579772, 724715, 1014601, 1449430, 2029202, 2898860, 4058404, 5073005, 10146010, 20292020]

約数ペア:

[(1, 20292020), (2, 10146010), (4, 5073005), (5, 4058404), (7, 2898860), (10, 2029202), (14, 1449430), (20, 1014601), (28, 724715), (35, 579772), (70, 289886), (140, 144943), (193, 105140), (386, 52570), (751, 27020), (772, 26285), (965, 21028), (1351, 15020), (1502, 13510), (1930, 10514), (2702, 7510), (3004, 6755), (3755, 5404), (3860, 5257)]