18938731

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2609}}^1$

素因数の和:2694

約数の個数: 16

約数和(自身を含む): 23302080

約数和(自身を除く): 4363349

約数列:

[1, 7, 17, 61, 119, 427, 1037, 2609, 7259, 18263, 44353, 159149, 310471, 1114043, 2705533, 18938731]

約数ペア:

[(1, 18938731), (7, 2705533), (17, 1114043), (61, 310471), (119, 159149), (427, 44353), (1037, 18263), (2609, 7259)]