21447041

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3923}}^1$

素因数の和:4012

約数の個数: 16

約数和(自身を含む): 27122688

約数和(自身を除く): 5675647

約数列:

[1, 7, 11, 71, 77, 497, 781, 3923, 5467, 27461, 43153, 278533, 302071, 1949731, 3063863, 21447041]

約数ペア:

[(1, 21447041), (7, 3063863), (11, 1949731), (71, 302071), (77, 278533), (497, 43153), (781, 27461), (3923, 5467)]