20715981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1123}}^1$

素因数の和:1193

約数の個数: 32

約数和(自身を含む): 33234432

約数和(自身を除く): 12518451

約数列:

[1, 3, 11, 13, 33, 39, 43, 129, 143, 429, 473, 559, 1123, 1419, 1677, 3369, 6149, 12353, 14599, 18447, 37059, 43797, 48289, 144867, 160589, 481767, 531179, 627757, 1593537, 1883271, 6905327, 20715981]

約数ペア:

[(1, 20715981), (3, 6905327), (11, 1883271), (13, 1593537), (33, 627757), (39, 531179), (43, 481767), (129, 160589), (143, 144867), (429, 48289), (473, 43797), (559, 37059), (1123, 18447), (1419, 14599), (1677, 12353), (3369, 6149)]