21404121

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1\times {\mathrm{613}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 29118336

約数和(自身を除く): 7714215

約数列:

[1, 3, 103, 113, 309, 339, 613, 1839, 11639, 34917, 63139, 69269, 189417, 207807, 7134707, 21404121]

約数ペア:

[(1, 21404121), (3, 7134707), (103, 207807), (113, 189417), (309, 69269), (339, 63139), (613, 34917), (1839, 11639)]