80419880

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10103}}^1$

素因数の和:10313

約数の個数: 32

約数和(自身を含む): 181872000

約数和(自身を除く): 101452120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10103, 20206, 40412, 50515, 80824, 101030, 202060, 404120, 2010497, 4020994, 8041988, 10052485, 16083976, 20104970, 40209940, 80419880]

約数ペア:

[(1, 80419880), (2, 40209940), (4, 20104970), (5, 16083976), (8, 10052485), (10, 8041988), (20, 4020994), (40, 2010497), (199, 404120), (398, 202060), (796, 101030), (995, 80824), (1592, 50515), (1990, 40412), (3980, 20206), (7960, 10103)]