18379640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2309}}^1$

素因数の和:2519

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 23200360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2309, 3980, 4618, 7960, 9236, 11545, 18472, 23090, 46180, 92360, 459491, 918982, 1837964, 2297455, 3675928, 4594910, 9189820, 18379640]

約数ペア:

[(1, 18379640), (2, 9189820), (4, 4594910), (5, 3675928), (8, 2297455), (10, 1837964), (20, 918982), (40, 459491), (199, 92360), (398, 46180), (796, 23090), (995, 18472), (1592, 11545), (1990, 9236), (2309, 7960), (3980, 4618)]