21282747

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{613}}^1$

素因数の和:850

約数の個数: 16

約数和(自身を含む): 29000448

約数和(自身を除く): 7717701

約数列:

[1, 3, 71, 163, 213, 489, 613, 1839, 11573, 34719, 43523, 99919, 130569, 299757, 7094249, 21282747]

約数ペア:

[(1, 21282747), (3, 7094249), (71, 299757), (163, 130569), (213, 99919), (489, 43523), (613, 34719), (1839, 11573)]