19748121

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{1999}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 27360000

約数和(自身を除く): 7611879

約数列:

[1, 3, 37, 89, 111, 267, 1999, 3293, 5997, 9879, 73963, 177911, 221889, 533733, 6582707, 19748121]

約数ペア:

[(1, 19748121), (3, 6582707), (37, 533733), (89, 221889), (111, 177911), (267, 73963), (1999, 9879), (3293, 5997)]