18800649

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2789}}^1$

素因数の和:2909

約数の個数: 24

約数和(自身を含む): 31337280

約数和(自身を除く): 12536631

約数列:

[1, 3, 7, 9, 21, 63, 107, 321, 749, 963, 2247, 2789, 6741, 8367, 19523, 25101, 58569, 175707, 298423, 895269, 2088961, 2685807, 6266883, 18800649]

約数ペア:

[(1, 18800649), (3, 6266883), (7, 2685807), (9, 2088961), (21, 895269), (63, 298423), (107, 175707), (321, 58569), (749, 25101), (963, 19523), (2247, 8367), (2789, 6741)]