18915614

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:272

約数の個数: 32

約数和(自身を含む): 30945024

約数和(自身を除く): 12029410

約数列:

[1, 2, 23, 43, 46, 73, 86, 131, 146, 262, 989, 1679, 1978, 3013, 3139, 3358, 5633, 6026, 6278, 9563, 11266, 19126, 72197, 129559, 144394, 219949, 259118, 411209, 439898, 822418, 9457807, 18915614]

約数ペア:

[(1, 18915614), (2, 9457807), (23, 822418), (43, 439898), (46, 411209), (73, 259118), (86, 219949), (131, 144394), (146, 129559), (262, 72197), (989, 19126), (1679, 11266), (1978, 9563), (3013, 6278), (3139, 6026), (3358, 5633)]