19687945

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1789}}^1$

素因数の和:1896

約数の個数: 16

約数和(自身を含む): 24744960

約数和(自身を除く): 5057015

約数列:

[1, 5, 31, 71, 155, 355, 1789, 2201, 8945, 11005, 55459, 127019, 277295, 635095, 3937589, 19687945]

約数ペア:

[(1, 19687945), (5, 3937589), (31, 635095), (71, 277295), (155, 127019), (355, 55459), (1789, 11005), (2201, 8945)]