18880939

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3359}}^1$

素因数の和:3450

約数の個数: 16

約数和(自身を含む): 23869440

約数和(自身を除く): 4988501

約数列:

[1, 7, 11, 73, 77, 511, 803, 3359, 5621, 23513, 36949, 245207, 258643, 1716449, 2697277, 18880939]

約数ペア:

[(1, 18880939), (7, 2697277), (11, 1716449), (73, 258643), (77, 245207), (511, 36949), (803, 23513), (3359, 5621)]