20988879

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{1093}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 28934112

約数和(自身を除く): 7945233

約数列:

[1, 3, 37, 111, 173, 519, 1093, 3279, 6401, 19203, 40441, 121323, 189089, 567267, 6996293, 20988879]

約数ペア:

[(1, 20988879), (3, 6996293), (37, 567267), (111, 189089), (173, 121323), (519, 40441), (1093, 19203), (3279, 6401)]