18023780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47431}}^1$

素因数の和:47459

約数の個数: 24

約数和(自身を含む): 39842880

約数和(自身を除く): 21819100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 47431, 94862, 189724, 237155, 474310, 901189, 948620, 1802378, 3604756, 4505945, 9011890, 18023780]

約数ペア:

[(1, 18023780), (2, 9011890), (4, 4505945), (5, 3604756), (10, 1802378), (19, 948620), (20, 901189), (38, 474310), (76, 237155), (95, 189724), (190, 94862), (380, 47431)]