19700021

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:644

約数の個数: 16

約数和(自身を含む): 22344000

約数和(自身を除く): 2643979

約数列:

[1, 11, 37, 97, 407, 499, 1067, 3589, 5489, 18463, 39479, 48403, 203093, 532433, 1790911, 19700021]

約数ペア:

[(1, 19700021), (11, 1790911), (37, 532433), (97, 203093), (407, 48403), (499, 39479), (1067, 18463), (3589, 5489)]