19910246

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{4523}}^1$

素因数の和:4627

約数の個数: 16

約数和(自身を含む): 31269888

約数和(自身を除く): 11359642

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 4523, 9046, 140213, 280426, 321133, 642266, 9955123, 19910246]

約数ペア:

[(1, 19910246), (2, 9955123), (31, 642266), (62, 321133), (71, 280426), (142, 140213), (2201, 9046), (4402, 4523)]