20216185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 7652999

約数列:

[1, 5, 11, 31, 55, 71, 155, 167, 341, 355, 781, 835, 1705, 1837, 2201, 3905, 5177, 9185, 11005, 11857, 24211, 25885, 56947, 59285, 121055, 130427, 284735, 367567, 652135, 1837835, 4043237, 20216185]

約数ペア:

[(1, 20216185), (5, 4043237), (11, 1837835), (31, 652135), (55, 367567), (71, 284735), (155, 130427), (167, 121055), (341, 59285), (355, 56947), (781, 25885), (835, 24211), (1705, 11857), (1837, 11005), (2201, 9185), (3905, 5177)]