128423735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{32887}}^1$

素因数の和:32974

約数の個数: 16

約数和(自身を含む): 170491392

約数和(自身を除く): 42067657

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 32887, 164435, 361757, 1808785, 2334977, 11674885, 25684747, 128423735]

約数ペア:

[(1, 128423735), (5, 25684747), (11, 11674885), (55, 2334977), (71, 1808785), (355, 361757), (781, 164435), (3905, 32887)]