21330445

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{1987}}^1$

素因数の和:2124

約数の個数: 16

約数和(自身を含む): 27195840

約数和(自身を除く): 5865395

約数列:

[1, 5, 19, 95, 113, 565, 1987, 2147, 9935, 10735, 37753, 188765, 224531, 1122655, 4266089, 21330445]

約数ペア:

[(1, 21330445), (5, 4266089), (19, 1122655), (95, 224531), (113, 188765), (565, 37753), (1987, 10735), (2147, 9935)]