21221256

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{126317}}^1$

素因数の和:126333

約数の個数: 32

約数和(自身を含む): 60632640

約数和(自身を除く): 39411384

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 126317, 252634, 378951, 505268, 757902, 884219, 1010536, 1515804, 1768438, 2652657, 3031608, 3536876, 5305314, 7073752, 10610628, 21221256]

約数ペア:

[(1, 21221256), (2, 10610628), (3, 7073752), (4, 5305314), (6, 3536876), (7, 3031608), (8, 2652657), (12, 1768438), (14, 1515804), (21, 1010536), (24, 884219), (28, 757902), (42, 505268), (56, 378951), (84, 252634), (168, 126317)]