19677305

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{431}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 24758784

約数和(自身を除く): 5081479

約数列:

[1, 5, 23, 115, 397, 431, 1985, 2155, 9131, 9913, 45655, 49565, 171107, 855535, 3935461, 19677305]

約数ペア:

[(1, 19677305), (5, 3935461), (23, 855535), (115, 171107), (397, 49565), (431, 45655), (1985, 9913), (2155, 9131)]