21349069

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{1019}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 25361280

約数和(自身を除く): 4012211

約数列:

[1, 7, 41, 73, 287, 511, 1019, 2993, 7133, 20951, 41779, 74387, 292453, 520709, 3049867, 21349069]

約数ペア:

[(1, 21349069), (7, 3049867), (41, 520709), (73, 292453), (287, 74387), (511, 41779), (1019, 20951), (2993, 7133)]