261347667

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{23887}}^1$

素因数の和:24418

約数の個数: 16

約数和(自身を含む): 399025152

約数和(自身を除く): 137677485

約数列:

[1, 3, 7, 21, 521, 1563, 3647, 10941, 23887, 71661, 167209, 501627, 12445127, 37335381, 87115889, 261347667]

約数ペア:

[(1, 261347667), (3, 87115889), (7, 37335381), (21, 12445127), (521, 501627), (1563, 167209), (3647, 71661), (10941, 23887)]