820168

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 1549980

約数和(自身を除く): 729812

約数列:

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

約数ペア:

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