21423680

素因数分解:

$2^6\times 5^1\times {\mathrm{66949}}^1$

素因数の和:66966

約数の個数: 28

約数和(自身を含む): 51015900

約数和(自身を除く): 29592220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66949, 133898, 267796, 334745, 535592, 669490, 1071184, 1338980, 2142368, 2677960, 4284736, 5355920, 10711840, 21423680]

約数ペア:

[(1, 21423680), (2, 10711840), (4, 5355920), (5, 4284736), (8, 2677960), (10, 2142368), (16, 1338980), (20, 1071184), (32, 669490), (40, 535592), (64, 334745), (80, 267796), (160, 133898), (320, 66949)]