18780051880

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2359303}}^1$

素因数の和:2359513

約数の個数: 32

約数和(自身を含む): 42467472000

約数和(自身を除く): 23687420120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 2359303, 4718606, 9437212, 11796515, 18874424, 23593030, 47186060, 94372120, 469501297, 939002594, 1878005188, 2347506485, 3756010376, 4695012970, 9390025940, 18780051880]

約数ペア:

[(1, 18780051880), (2, 9390025940), (4, 4695012970), (5, 3756010376), (8, 2347506485), (10, 1878005188), (20, 939002594), (40, 469501297), (199, 94372120), (398, 47186060), (796, 23593030), (995, 18874424), (1592, 11796515), (1990, 9437212), (3980, 4718606), (7960, 2359303)]