20957745

素因数分解:

$3^1\times 5^1\times {\mathrm{1069}}^1\times {\mathrm{1307}}^1$

素因数の和:2384

約数の個数: 16

約数和(自身を含む): 33589440

約数和(自身を除く): 12631695

約数列:

[1, 3, 5, 15, 1069, 1307, 3207, 3921, 5345, 6535, 16035, 19605, 1397183, 4191549, 6985915, 20957745]

約数ペア:

[(1, 20957745), (3, 6985915), (5, 4191549), (15, 1397183), (1069, 19605), (1307, 16035), (3207, 6535), (3921, 5345)]