200708440

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{12899}}^1$

素因数の和:13299

約数の個数: 32

約数和(自身を含む): 452790000

約数和(自身を除く): 252081560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 12899, 15560, 25798, 51596, 64495, 103192, 128990, 257980, 515960, 5017711, 10035422, 20070844, 25088555, 40141688, 50177110, 100354220, 200708440]

約数ペア:

[(1, 200708440), (2, 100354220), (4, 50177110), (5, 40141688), (8, 25088555), (10, 20070844), (20, 10035422), (40, 5017711), (389, 515960), (778, 257980), (1556, 128990), (1945, 103192), (3112, 64495), (3890, 51596), (7780, 25798), (12899, 15560)]