21599379

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{7207}}^1$

素因数の和:7256

約数の個数: 20

約数和(自身を含む): 33142384

約数和(自身を除く): 11543005

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 7207, 21621, 64863, 194589, 266659, 583767, 799977, 2399931, 7199793, 21599379]

約数ペア:

[(1, 21599379), (3, 7199793), (9, 2399931), (27, 799977), (37, 583767), (81, 266659), (111, 194589), (333, 64863), (999, 21621), (2997, 7207)]