21047236

素因数分解:

$2^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{2417}}^1$

素因数の和:2739

約数の個数: 24

約数和(自身を含む): 42247296

約数和(自身を除く): 21200060

約数列:

[1, 2, 4, 7, 14, 28, 311, 622, 1244, 2177, 2417, 4354, 4834, 8708, 9668, 16919, 33838, 67676, 751687, 1503374, 3006748, 5261809, 10523618, 21047236]

約数ペア:

[(1, 21047236), (2, 10523618), (4, 5261809), (7, 3006748), (14, 1503374), (28, 751687), (311, 67676), (622, 33838), (1244, 16919), (2177, 9668), (2417, 8708), (4354, 4834)]