21439376

素因数分解:

$2^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1789}}^1$

素因数の和:1911

約数の個数: 40

約数和(自身を含む): 47943360

約数和(自身を除く): 26503984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 107, 112, 214, 428, 749, 856, 1498, 1712, 1789, 2996, 3578, 5992, 7156, 11984, 12523, 14312, 25046, 28624, 50092, 100184, 191423, 200368, 382846, 765692, 1339961, 1531384, 2679922, 3062768, 5359844, 10719688, 21439376]

約数ペア:

[(1, 21439376), (2, 10719688), (4, 5359844), (7, 3062768), (8, 2679922), (14, 1531384), (16, 1339961), (28, 765692), (56, 382846), (107, 200368), (112, 191423), (214, 100184), (428, 50092), (749, 28624), (856, 25046), (1498, 14312), (1712, 12523), (1789, 11984), (2996, 7156), (3578, 5992)]