256497880

素因数分解:

$2^3\times 5^1\times {\mathrm{6412447}}^1$

素因数の和:6412458

約数の個数: 16

約数和(自身を含む): 577120320

約数和(自身を除く): 320622440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6412447, 12824894, 25649788, 32062235, 51299576, 64124470, 128248940, 256497880]

約数ペア:

[(1, 256497880), (2, 128248940), (4, 64124470), (5, 51299576), (8, 32062235), (10, 25649788), (20, 12824894), (40, 6412447)]