20154981

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{87251}}^1$

素因数の和:87272

約数の個数: 16

約数和(自身を含む): 33504768

約数和(自身を除く): 13349787

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 87251, 261753, 610757, 959761, 1832271, 2879283, 6718327, 20154981]

約数ペア:

[(1, 20154981), (3, 6718327), (7, 2879283), (11, 1832271), (21, 959761), (33, 610757), (77, 261753), (231, 87251)]