128016880

素因数分解:

$2^4\times 5^1\times {\mathrm{1600211}}^1$

素因数の和:1600224

約数の個数: 20

約数和(自身を含む): 297639432

約数和(自身を除く): 169622552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1600211, 3200422, 6400844, 8001055, 12801688, 16002110, 25603376, 32004220, 64008440, 128016880]

約数ペア:

[(1, 128016880), (2, 64008440), (4, 32004220), (5, 25603376), (8, 16002110), (10, 12801688), (16, 8001055), (20, 6400844), (40, 3200422), (80, 1600211)]