1640336

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:818

約数の個数: 20

約数和(自身を含む): 3203292

約数和(自身を除く): 1562956

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 653, 1256, 1306, 2512, 2612, 5224, 10448, 102521, 205042, 410084, 820168, 1640336]

約数ペア:

[(1, 1640336), (2, 820168), (4, 410084), (8, 205042), (16, 102521), (157, 10448), (314, 5224), (628, 2612), (653, 2512), (1256, 1306)]