991277

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:208

約数の個数: 16

約数和(自身を含む): 1216512

約数和(自身を除く): 225235

約数列:

[1, 7, 23, 47, 131, 161, 329, 917, 1081, 3013, 6157, 7567, 21091, 43099, 141611, 991277]

約数ペア:

[(1, 991277), (7, 141611), (23, 43099), (47, 21091), (131, 7567), (161, 6157), (329, 3013), (917, 1081)]