28182385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1031}}^1$

素因数の和:1125

約数の個数: 32

約数和(自身を含む): 42799104

約数和(自身を除く): 14616719

約数列:

[1, 5, 7, 11, 35, 55, 71, 77, 355, 385, 497, 781, 1031, 2485, 3905, 5155, 5467, 7217, 11341, 27335, 36085, 56705, 73201, 79387, 366005, 396935, 512407, 805211, 2562035, 4026055, 5636477, 28182385]

約数ペア:

[(1, 28182385), (5, 5636477), (7, 4026055), (11, 2562035), (35, 805211), (55, 512407), (71, 396935), (77, 366005), (355, 79387), (385, 73201), (497, 56705), (781, 36085), (1031, 27335), (2485, 11341), (3905, 7217), (5155, 5467)]