81587248

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{32479}}^1$

素因数の和:32644

約数の個数: 20

約数和(自身を含む): 159087040

約数和(自身を除く): 77499792

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 32479, 64958, 129916, 259832, 519664, 5099203, 10198406, 20396812, 40793624, 81587248]

約数ペア:

[(1, 81587248), (2, 40793624), (4, 20396812), (8, 10198406), (16, 5099203), (157, 519664), (314, 259832), (628, 129916), (1256, 64958), (2512, 32479)]