19992016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113591}}^1$

素因数の和:113610

約数の個数: 20

約数和(自身を含む): 42256224

約数和(自身を除く): 22264208

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 113591, 227182, 454364, 908728, 1249501, 1817456, 2499002, 4998004, 9996008, 19992016]

約数ペア:

[(1, 19992016), (2, 9996008), (4, 4998004), (8, 2499002), (11, 1817456), (16, 1249501), (22, 908728), (44, 454364), (88, 227182), (176, 113591)]