8945020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{353}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 21647808

約数和(自身を除く): 12702788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 353, 362, 706, 724, 905, 1267, 1412, 1765, 1810, 2471, 2534, 3530, 3620, 4942, 5068, 6335, 7060, 9884, 12355, 12670, 24710, 25340, 49420, 63893, 127786, 255572, 319465, 447251, 638930, 894502, 1277860, 1789004, 2236255, 4472510, 8945020]

約数ペア:

[(1, 8945020), (2, 4472510), (4, 2236255), (5, 1789004), (7, 1277860), (10, 894502), (14, 638930), (20, 447251), (28, 319465), (35, 255572), (70, 127786), (140, 63893), (181, 49420), (353, 25340), (362, 24710), (706, 12670), (724, 12355), (905, 9884), (1267, 7060), (1412, 6335), (1765, 5068), (1810, 4942), (2471, 3620), (2534, 3530)]