21893980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5501}}^1$

素因数の和:5709

約数の個数: 24

約数和(自身を含む): 46216800

約数和(自身を除く): 24322820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 5501, 11002, 22004, 27505, 55010, 110020, 1094699, 2189398, 4378796, 5473495, 10946990, 21893980]

約数ペア:

[(1, 21893980), (2, 10946990), (4, 5473495), (5, 4378796), (10, 2189398), (20, 1094699), (199, 110020), (398, 55010), (796, 27505), (995, 22004), (1990, 11002), (3980, 5501)]