19979259

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{1279}}^1$

素因数の和:1450

約数の個数: 16

約数和(自身を含む): 27525120

約数和(自身を除く): 7545861

約数列:

[1, 3, 41, 123, 127, 381, 1279, 3837, 5207, 15621, 52439, 157317, 162433, 487299, 6659753, 19979259]

約数ペア:

[(1, 19979259), (3, 6659753), (41, 487299), (123, 162433), (127, 157317), (381, 52439), (1279, 15621), (3837, 5207)]