28208080

素因数分解:

$2^4\times 5^1\times {\mathrm{352601}}^1$

素因数の和:352614

約数の個数: 20

約数和(自身を含む): 65583972

約数和(自身を除く): 37375892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352601, 705202, 1410404, 1763005, 2820808, 3526010, 5641616, 7052020, 14104040, 28208080]

約数ペア:

[(1, 28208080), (2, 14104040), (4, 7052020), (5, 5641616), (8, 3526010), (10, 2820808), (16, 1763005), (20, 1410404), (40, 705202), (80, 352601)]