21402666

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16747}}^1$

素因数の和:16826

約数の個数: 24

約数和(自身を含む): 47028384

約数和(自身を除く): 25625718

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16747, 33494, 50241, 100482, 150723, 301446, 1189037, 2378074, 3567111, 7134222, 10701333, 21402666]

約数ペア:

[(1, 21402666), (2, 10701333), (3, 7134222), (6, 3567111), (9, 2378074), (18, 1189037), (71, 301446), (142, 150723), (213, 100482), (426, 50241), (639, 33494), (1278, 16747)]