21000663486

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1277879}}^1$

素因数の和:1277981

約数の個数: 48

約数和(自身を含む): 50236018560

約数和(自身を除く): 29235355074

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 83, 99, 166, 198, 249, 498, 747, 913, 1494, 1826, 2739, 5478, 8217, 16434, 1277879, 2555758, 3833637, 7667274, 11500911, 14056669, 23001822, 28113338, 42170007, 84340014, 106063957, 126510021, 212127914, 253020042, 318191871, 636383742, 954575613, 1166703527, 1909151226, 2333407054, 3500110581, 7000221162, 10500331743, 21000663486]

約数ペア:

[(1, 21000663486), (2, 10500331743), (3, 7000221162), (6, 3500110581), (9, 2333407054), (11, 1909151226), (18, 1166703527), (22, 954575613), (33, 636383742), (66, 318191871), (83, 253020042), (99, 212127914), (166, 126510021), (198, 106063957), (249, 84340014), (498, 42170007), (747, 28113338), (913, 23001822), (1494, 14056669), (1826, 11500911), (2739, 7667274), (5478, 3833637), (8217, 2555758), (16434, 1277879)]