19889585

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:568

約数の個数: 16

約数和(自身を含む): 24416640

約数和(自身を除く): 4527055

約数列:

[1, 5, 71, 179, 313, 355, 895, 1565, 12709, 22223, 56027, 63545, 111115, 280135, 3977917, 19889585]

約数ペア:

[(1, 19889585), (5, 3977917), (71, 280135), (179, 111115), (313, 63545), (355, 56027), (895, 22223), (1565, 12709)]