172660

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 24

約数和(自身を含む): 370440

約数和(自身を除く): 197780

約数列:

[1, 2, 4, 5, 10, 20, 89, 97, 178, 194, 356, 388, 445, 485, 890, 970, 1780, 1940, 8633, 17266, 34532, 43165, 86330, 172660]

約数ペア:

[(1, 172660), (2, 86330), (4, 43165), (5, 34532), (10, 17266), (20, 8633), (89, 1940), (97, 1780), (178, 970), (194, 890), (356, 485), (388, 445)]