21081138

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{270271}}^1$

素因数の和:270289

約数の個数: 16

約数和(自身を含む): 45405696

約数和(自身を除く): 24324558

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 270271, 540542, 810813, 1621626, 3513523, 7027046, 10540569, 21081138]

約数ペア:

[(1, 21081138), (2, 10540569), (3, 7027046), (6, 3513523), (13, 1621626), (26, 810813), (39, 540542), (78, 270271)]