18720470

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{27941}}^1$

素因数の和:28015

約数の個数: 16

約数和(自身を含む): 34201008

約数和(自身を除く): 15480538

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 27941, 55882, 139705, 279410, 1872047, 3744094, 9360235, 18720470]

約数ペア:

[(1, 18720470), (2, 9360235), (5, 3744094), (10, 1872047), (67, 279410), (134, 139705), (335, 55882), (670, 27941)]