21839984

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12757}}^1$

素因数の和:12872

約数の個数: 20

約数和(自身を含む): 42713784

約数和(自身を除く): 20873800

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12757, 25514, 51028, 102056, 204112, 1364999, 2729998, 5459996, 10919992, 21839984]

約数ペア:

[(1, 21839984), (2, 10919992), (4, 5459996), (8, 2729998), (16, 1364999), (107, 204112), (214, 102056), (428, 51028), (856, 25514), (1712, 12757)]