19999780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52631}}^1$

素因数の和:52659

約数の個数: 24

約数和(自身を含む): 44210880

約数和(自身を除く): 24211100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52631, 105262, 210524, 263155, 526310, 999989, 1052620, 1999978, 3999956, 4999945, 9999890, 19999780]

約数ペア:

[(1, 19999780), (2, 9999890), (4, 4999945), (5, 3999956), (10, 1999978), (19, 1052620), (20, 999989), (38, 526310), (76, 263155), (95, 210524), (190, 105262), (380, 52631)]