18701605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{797}}^1$

素因数の和:853

約数の個数: 24

約数和(自身を含む): 25539192

約数和(自身を除く): 6837587

約数列:

[1, 5, 13, 19, 65, 95, 247, 361, 797, 1235, 1805, 3985, 4693, 10361, 15143, 23465, 51805, 75715, 196859, 287717, 984295, 1438585, 3740321, 18701605]

約数ペア:

[(1, 18701605), (5, 3740321), (13, 1438585), (19, 984295), (65, 287717), (95, 196859), (247, 75715), (361, 51805), (797, 23465), (1235, 15143), (1805, 10361), (3985, 4693)]