642910239

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{15731}}^1$

素因数の和:15995

約数の個数: 24

約数和(自身を含む): 981676800

約数和(自身を除く): 338766561

約数列:

[1, 3, 9, 19, 57, 171, 239, 717, 2151, 4541, 13623, 15731, 40869, 47193, 141579, 298889, 896667, 2690001, 3759709, 11279127, 33837381, 71434471, 214303413, 642910239]

約数ペア:

[(1, 642910239), (3, 214303413), (9, 71434471), (19, 33837381), (57, 11279127), (171, 3759709), (239, 2690001), (717, 896667), (2151, 298889), (4541, 141579), (13623, 47193), (15731, 40869)]