20640235

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53611}}^1$

素因数の和:53634

約数の個数: 16

約数和(自身を含む): 30880512

約数和(自身を除く): 10240277

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 53611, 268055, 375277, 589721, 1876385, 2948605, 4128047, 20640235]

約数ペア:

[(1, 20640235), (5, 4128047), (7, 2948605), (11, 1876385), (35, 589721), (55, 375277), (77, 268055), (385, 53611)]