17806520

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2237}}^1$

素因数の和:2447

約数の個数: 32

約数和(自身を含む): 40284000

約数和(自身を除く): 22477480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2237, 3980, 4474, 7960, 8948, 11185, 17896, 22370, 44740, 89480, 445163, 890326, 1780652, 2225815, 3561304, 4451630, 8903260, 17806520]

約数ペア:

[(1, 17806520), (2, 8903260), (4, 4451630), (5, 3561304), (8, 2225815), (10, 1780652), (20, 890326), (40, 445163), (199, 89480), (398, 44740), (796, 22370), (995, 17896), (1592, 11185), (1990, 8948), (2237, 7960), (3980, 4474)]