20318804

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41981}}^1$

素因数の和:42007

約数の個数: 18

約数和(自身を含む): 39085242

約数和(自身を除く): 18766438

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 41981, 83962, 167924, 461791, 923582, 1847164, 5079701, 10159402, 20318804]

約数ペア:

[(1, 20318804), (2, 10159402), (4, 5079701), (11, 1847164), (22, 923582), (44, 461791), (121, 167924), (242, 83962), (484, 41981)]