21201026

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:375

約数の個数: 48

約数和(自身を含む): 41072832

約数和(自身を除く): 19871806

約数列:

[1, 2, 7, 11, 14, 22, 49, 71, 77, 98, 142, 154, 277, 497, 539, 554, 781, 994, 1078, 1562, 1939, 3047, 3479, 3878, 5467, 6094, 6958, 10934, 13573, 19667, 21329, 27146, 38269, 39334, 42658, 76538, 137669, 149303, 216337, 275338, 298606, 432674, 963683, 1514359, 1927366, 3028718, 10600513, 21201026]

約数ペア:

[(1, 21201026), (2, 10600513), (7, 3028718), (11, 1927366), (14, 1514359), (22, 963683), (49, 432674), (71, 298606), (77, 275338), (98, 216337), (142, 149303), (154, 137669), (277, 76538), (497, 42658), (539, 39334), (554, 38269), (781, 27146), (994, 21329), (1078, 19667), (1562, 13573), (1939, 10934), (3047, 6958), (3479, 6094), (3878, 5467)]