21994288

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{4153}}^1$

素因数の和:4492

約数の個数: 20

約数和(自身を含む): 42752968

約数和(自身を除く): 20758680

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 4153, 5296, 8306, 16612, 33224, 66448, 1374643, 2749286, 5498572, 10997144, 21994288]

約数ペア:

[(1, 21994288), (2, 10997144), (4, 5498572), (8, 2749286), (16, 1374643), (331, 66448), (662, 33224), (1324, 16612), (2648, 8306), (4153, 5296)]