189997493

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1\times {\mathrm{991}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 221414400

約数和(自身を除く): 31416907

約数列:

[1, 7, 61, 427, 449, 991, 3143, 6937, 27389, 60451, 191723, 423157, 444959, 3114713, 27142499, 189997493]

約数ペア:

[(1, 189997493), (7, 27142499), (61, 3114713), (427, 444959), (449, 423157), (991, 191723), (3143, 60451), (6937, 27389)]