990828880

素因数分解:

$2^4\times 5^1\times {\mathrm{12385361}}^1$

素因数の和:12385374

約数の個数: 20

約数和(自身を含む): 2303677332

約数和(自身を除く): 1312848452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 12385361, 24770722, 49541444, 61926805, 99082888, 123853610, 198165776, 247707220, 495414440, 990828880]

約数ペア:

[(1, 990828880), (2, 495414440), (4, 247707220), (5, 198165776), (8, 123853610), (10, 99082888), (16, 61926805), (20, 49541444), (40, 24770722), (80, 12385361)]