19904591

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{123631}}^1$

素因数の和:123661

約数の個数: 8

約数和(自身を含む): 23737344

約数和(自身を除く): 3832753

約数列:

[1, 7, 23, 161, 123631, 865417, 2843513, 19904591]

約数ペア:

[(1, 19904591), (7, 2843513), (23, 865417), (161, 123631)]