21907689

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{631}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 29850624

約数和(自身を除く): 7942935

約数列:

[1, 3, 71, 163, 213, 489, 631, 1893, 11573, 34719, 44801, 102853, 134403, 308559, 7302563, 21907689]

約数ペア:

[(1, 21907689), (3, 7302563), (71, 308559), (163, 134403), (213, 102853), (489, 44801), (631, 34719), (1893, 11573)]