81500740

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{26987}}^1$

素因数の和:27147

約数の個数: 24

約数和(自身を含む): 172291392

約数和(自身を除く): 90790652

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 26987, 53974, 107948, 134935, 269870, 539740, 4075037, 8150074, 16300148, 20375185, 40750370, 81500740]

約数ペア:

[(1, 81500740), (2, 40750370), (4, 20375185), (5, 16300148), (10, 8150074), (20, 4075037), (151, 539740), (302, 269870), (604, 134935), (755, 107948), (1510, 53974), (3020, 26987)]