20988156

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{249859}}^1$

素因数の和:249873

約数の個数: 24

約数和(自身を含む): 55968640

約数和(自身を除く): 34980484

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 249859, 499718, 749577, 999436, 1499154, 1749013, 2998308, 3498026, 5247039, 6996052, 10494078, 20988156]

約数ペア:

[(1, 20988156), (2, 10494078), (3, 6996052), (4, 5247039), (6, 3498026), (7, 2998308), (12, 1749013), (14, 1499154), (21, 999436), (28, 749577), (42, 499718), (84, 249859)]