21971873

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4019}}^1$

素因数の和:4108

約数の個数: 16

約数和(自身を含む): 27786240

約数和(自身を除く): 5814367

約数列:

[1, 7, 11, 71, 77, 497, 781, 4019, 5467, 28133, 44209, 285349, 309463, 1997443, 3138839, 21971873]

約数ペア:

[(1, 21971873), (7, 3138839), (11, 1997443), (71, 309463), (77, 285349), (497, 44209), (781, 28133), (4019, 5467)]