21295568

素因数分解:

$2^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1777}}^1$

素因数の和:1899

約数の個数: 40

約数和(自身を含む): 47621952

約数和(自身を除く): 26326384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 107, 112, 214, 428, 749, 856, 1498, 1712, 1777, 2996, 3554, 5992, 7108, 11984, 12439, 14216, 24878, 28432, 49756, 99512, 190139, 199024, 380278, 760556, 1330973, 1521112, 2661946, 3042224, 5323892, 10647784, 21295568]

約数ペア:

[(1, 21295568), (2, 10647784), (4, 5323892), (7, 3042224), (8, 2661946), (14, 1521112), (16, 1330973), (28, 760556), (56, 380278), (107, 199024), (112, 190139), (214, 99512), (428, 49756), (749, 28432), (856, 24878), (1498, 14216), (1712, 12439), (1777, 11984), (2996, 7108), (3554, 5992)]