20457297

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{733}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 33893184

約数和(自身を除く): 13435887

約数列:

[1, 3, 7, 9, 21, 63, 443, 733, 1329, 2199, 3101, 3987, 5131, 6597, 9303, 15393, 27909, 46179, 324719, 974157, 2273033, 2922471, 6819099, 20457297]

約数ペア:

[(1, 20457297), (3, 6819099), (7, 2922471), (9, 2273033), (21, 974157), (63, 324719), (443, 46179), (733, 27909), (1329, 15393), (2199, 9303), (3101, 6597), (3987, 5131)]