13181721

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{10639}}^1$

素因数の和:10708

約数の個数: 16

約数和(自身を含む): 20428800

約数和(自身を除く): 7247079

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 10639, 31917, 74473, 223419, 627701, 1883103, 4393907, 13181721]

約数ペア:

[(1, 13181721), (3, 4393907), (7, 1883103), (21, 627701), (59, 223419), (177, 74473), (413, 31917), (1239, 10639)]