81307340

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{41911}}^1$

素因数の和:42017

約数の個数: 24

約数和(自身を含む): 172509792

約数和(自身を除く): 91202452

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 41911, 83822, 167644, 209555, 419110, 838220, 4065367, 8130734, 16261468, 20326835, 40653670, 81307340]

約数ペア:

[(1, 81307340), (2, 40653670), (4, 20326835), (5, 16261468), (10, 8130734), (20, 4065367), (97, 838220), (194, 419110), (388, 209555), (485, 167644), (970, 83822), (1940, 41911)]