257761707

素因数分解:

$3^1\times 7^2\times {\mathrm{1753481}}^1$

素因数の和:1753498

約数の個数: 12

約数和(自身を含む): 399793896

約数和(自身を除く): 142032189

約数列:

[1, 3, 7, 21, 49, 147, 1753481, 5260443, 12274367, 36823101, 85920569, 257761707]

約数ペア:

[(1, 257761707), (3, 85920569), (7, 36823101), (21, 12274367), (49, 5260443), (147, 1753481)]