19990768

素因数分解:

$2^4\times 7^1\times {\mathrm{178489}}^1$

素因数の和:178504

約数の個数: 20

約数和(自身を含む): 44265520

約数和(自身を除く): 24274752

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 178489, 356978, 713956, 1249423, 1427912, 2498846, 2855824, 4997692, 9995384, 19990768]

約数ペア:

[(1, 19990768), (2, 9995384), (4, 4997692), (7, 2855824), (8, 2498846), (14, 1427912), (16, 1249423), (28, 713956), (56, 356978), (112, 178489)]