663640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 1529280

約数和(自身を除く): 865640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 353, 376, 470, 706, 940, 1412, 1765, 1880, 2824, 3530, 7060, 14120, 16591, 33182, 66364, 82955, 132728, 165910, 331820, 663640]

約数ペア:

[(1, 663640), (2, 331820), (4, 165910), (5, 132728), (8, 82955), (10, 66364), (20, 33182), (40, 16591), (47, 14120), (94, 7060), (188, 3530), (235, 2824), (353, 1880), (376, 1765), (470, 1412), (706, 940)]