20488489

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{359}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 24330240

約数和(自身を除く): 3841751

約数列:

[1, 7, 31, 217, 263, 359, 1841, 2513, 8153, 11129, 57071, 77903, 94417, 660919, 2926927, 20488489]

約数ペア:

[(1, 20488489), (7, 2926927), (31, 660919), (217, 94417), (263, 77903), (359, 57071), (1841, 11129), (2513, 8153)]