18168680

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1049}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 41013000

約数和(自身を除く): 22844320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1049, 1732, 2098, 2165, 3464, 4196, 4330, 5245, 8392, 8660, 10490, 17320, 20980, 41960, 454217, 908434, 1816868, 2271085, 3633736, 4542170, 9084340, 18168680]

約数ペア:

[(1, 18168680), (2, 9084340), (4, 4542170), (5, 3633736), (8, 2271085), (10, 1816868), (20, 908434), (40, 454217), (433, 41960), (866, 20980), (1049, 17320), (1732, 10490), (2098, 8660), (2165, 8392), (3464, 5245), (4196, 4330)]