21236395

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7211}}^1$

素因数の和:7266

約数の個数: 16

約数和(自身を含む): 27694080

約数和(自身を除く): 6457685

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 7211, 36055, 137009, 223541, 685045, 1117705, 4247279, 21236395]

約数ペア:

[(1, 21236395), (5, 4247279), (19, 1117705), (31, 685045), (95, 223541), (155, 137009), (589, 36055), (2945, 7211)]