81495680

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{18191}}^1$

素因数の和:18217

約数の個数: 64

約数和(自身を含む): 222670080

約数和(自身を除く): 141174400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 18191, 36382, 72764, 90955, 127337, 145528, 181910, 254674, 291056, 363820, 509348, 582112, 636685, 727640, 1018696, 1164224, 1273370, 1455280, 2037392, 2328448, 2546740, 2910560, 4074784, 5093480, 5821120, 8149568, 10186960, 11642240, 16299136, 20373920, 40747840, 81495680]

約数ペア:

[(1, 81495680), (2, 40747840), (4, 20373920), (5, 16299136), (7, 11642240), (8, 10186960), (10, 8149568), (14, 5821120), (16, 5093480), (20, 4074784), (28, 2910560), (32, 2546740), (35, 2328448), (40, 2037392), (56, 1455280), (64, 1273370), (70, 1164224), (80, 1018696), (112, 727640), (128, 636685), (140, 582112), (160, 509348), (224, 363820), (280, 291056), (320, 254674), (448, 181910), (560, 145528), (640, 127337), (896, 90955), (1120, 72764), (2240, 36382), (4480, 18191)]