21223216

素因数分解:

$2^4\times 7^1\times {\mathrm{189493}}^1$

素因数の和:189508

約数の個数: 20

約数和(自身を含む): 46994512

約数和(自身を除く): 25771296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189493, 378986, 757972, 1326451, 1515944, 2652902, 3031888, 5305804, 10611608, 21223216]

約数ペア:

[(1, 21223216), (2, 10611608), (4, 5305804), (7, 3031888), (8, 2652902), (14, 1515944), (16, 1326451), (28, 757972), (56, 378986), (112, 189493)]