18814901

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:524

約数の個数: 16

約数和(自身を含む): 22081920

約数和(自身を除く): 3267019

約数列:

[1, 7, 61, 139, 317, 427, 973, 2219, 8479, 19337, 44063, 59353, 135359, 308441, 2687843, 18814901]

約数ペア:

[(1, 18814901), (7, 2687843), (61, 308441), (139, 135359), (317, 59353), (427, 44063), (973, 19337), (2219, 8479)]