20807815

素因数分解:

$5^1\times 7^1\times {\mathrm{433}}^1\times {\mathrm{1373}}^1$

素因数の和:1818

約数の個数: 16

約数和(自身を含む): 28623168

約数和(自身を除く): 7815353

約数列:

[1, 5, 7, 35, 433, 1373, 2165, 3031, 6865, 9611, 15155, 48055, 594509, 2972545, 4161563, 20807815]

約数ペア:

[(1, 20807815), (5, 4161563), (7, 2972545), (35, 594509), (433, 48055), (1373, 15155), (2165, 9611), (3031, 6865)]