21089901

素因数分解:

$3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{2267}}^1$

素因数の和:2720

約数の個数: 16

約数和(自身を含む): 32223744

約数和(自身を除く): 11133843

約数列:

[1, 3, 7, 21, 443, 1329, 2267, 3101, 6801, 9303, 15869, 47607, 1004281, 3012843, 7029967, 21089901]

約数ペア:

[(1, 21089901), (3, 7029967), (7, 3012843), (21, 1004281), (443, 47607), (1329, 15869), (2267, 9303), (3101, 6801)]