18478481

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{401}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 21997440

約数和(自身を除く): 3518959

約数列:

[1, 7, 29, 203, 227, 401, 1589, 2807, 6583, 11629, 46081, 81403, 91027, 637189, 2639783, 18478481]

約数ペア:

[(1, 18478481), (7, 2639783), (29, 637189), (203, 91027), (227, 81403), (401, 46081), (1589, 11629), (2807, 6583)]