138640528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{666541}}^1$

素因数の和:666562

約数の個数: 20

約数和(自身を含む): 289279228

約数和(自身を除く): 150638700

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 666541, 1333082, 2666164, 5332328, 8665033, 10664656, 17330066, 34660132, 69320264, 138640528]

約数ペア:

[(1, 138640528), (2, 69320264), (4, 34660132), (8, 17330066), (13, 10664656), (16, 8665033), (26, 5332328), (52, 2666164), (104, 1333082), (208, 666541)]