20190908

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{117389}}^1$

素因数の和:117436

約数の個数: 12

約数和(自身を含む): 36156120

約数和(自身を除く): 15965212

約数列:

[1, 2, 4, 43, 86, 172, 117389, 234778, 469556, 5047727, 10095454, 20190908]

約数ペア:

[(1, 20190908), (2, 10095454), (4, 5047727), (43, 469556), (86, 234778), (172, 117389)]