646563138

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{8289271}}^1$

素因数の和:8289289

約数の個数: 16

約数和(自身を含む): 1392597696

約数和(自身を除く): 746034558

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 8289271, 16578542, 24867813, 49735626, 107760523, 215521046, 323281569, 646563138]

約数ペア:

[(1, 646563138), (2, 323281569), (3, 215521046), (6, 107760523), (13, 49735626), (26, 24867813), (39, 16578542), (78, 8289271)]