21272874

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11779}}^1$

素因数の和:11834

約数の個数: 32

約数和(自身を含む): 49758720

約数和(自身を除く): 28485846

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 301, 602, 903, 1806, 11779, 23558, 35337, 70674, 82453, 164906, 247359, 494718, 506497, 1012994, 1519491, 3038982, 3545479, 7090958, 10636437, 21272874]

約数ペア:

[(1, 21272874), (2, 10636437), (3, 7090958), (6, 3545479), (7, 3038982), (14, 1519491), (21, 1012994), (42, 506497), (43, 494718), (86, 247359), (129, 164906), (258, 82453), (301, 70674), (602, 35337), (903, 23558), (1806, 11779)]