208078160

素因数分解:

$2^4\times 5^1\times {\mathrm{2600977}}^1$

素因数の和:2600990

約数の個数: 20

約数和(自身を含む): 483781908

約数和(自身を除く): 275703748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2600977, 5201954, 10403908, 13004885, 20807816, 26009770, 41615632, 52019540, 104039080, 208078160]

約数ペア:

[(1, 208078160), (2, 104039080), (4, 52019540), (5, 41615632), (8, 26009770), (10, 20807816), (16, 13004885), (20, 10403908), (40, 5201954), (80, 2600977)]