208432880

素因数分解:

$2^4\times 5^1\times {\mathrm{2605411}}^1$

素因数の和:2605424

約数の個数: 20

約数和(自身を含む): 484606632

約数和(自身を除く): 276173752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2605411, 5210822, 10421644, 13027055, 20843288, 26054110, 41686576, 52108220, 104216440, 208432880]

約数ペア:

[(1, 208432880), (2, 104216440), (4, 52108220), (5, 41686576), (8, 26054110), (10, 20843288), (16, 13027055), (20, 10421644), (40, 5210822), (80, 2605411)]