19997312

素因数分解:

$2^7\times {\mathrm{156229}}^1$

素因数の和:156243

約数の個数: 16

約数和(自身を含む): 39838650

約数和(自身を除く): 19841338

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 156229, 312458, 624916, 1249832, 2499664, 4999328, 9998656, 19997312]

約数ペア:

[(1, 19997312), (2, 9998656), (4, 4999328), (8, 2499664), (16, 1249832), (32, 624916), (64, 312458), (128, 156229)]