21895657

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{853}}^1$

素因数の和:1072

約数の個数: 16

約数和(自身を含む): 26508160

約数和(自身を除く): 4612503

約数列:

[1, 7, 19, 133, 193, 853, 1351, 3667, 5971, 16207, 25669, 113449, 164629, 1152403, 3127951, 21895657]

約数ペア:

[(1, 21895657), (7, 3127951), (19, 1152403), (133, 164629), (193, 113449), (853, 25669), (1351, 16207), (3667, 5971)]