19983021

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4079}}^1$

素因数の和:4176

約数の個数: 16

約数和(自身を含む): 28200960

約数和(自身を除く): 8217939

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4079, 4899, 12237, 93817, 281451, 289609, 868827, 6661007, 19983021]

約数ペア:

[(1, 19983021), (3, 6661007), (23, 868827), (69, 289609), (71, 281451), (213, 93817), (1633, 12237), (4079, 4899)]