20180920

素因数分解:

$2^3\times 5^1\times {\mathrm{504523}}^1$

素因数の和:504534

約数の個数: 16

約数和(自身を含む): 45407160

約数和(自身を除く): 25226240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504523, 1009046, 2018092, 2522615, 4036184, 5045230, 10090460, 20180920]

約数ペア:

[(1, 20180920), (2, 10090460), (4, 5045230), (5, 4036184), (8, 2522615), (10, 2018092), (20, 1009046), (40, 504523)]