30886780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81281}}^1$

素因数の和:81309

約数の個数: 24

約数和(自身を含む): 68276880

約数和(自身を除く): 37390100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 81281, 162562, 325124, 406405, 812810, 1544339, 1625620, 3088678, 6177356, 7721695, 15443390, 30886780]

約数ペア:

[(1, 30886780), (2, 15443390), (4, 7721695), (5, 6177356), (10, 3088678), (19, 1625620), (20, 1544339), (38, 812810), (76, 406405), (95, 325124), (190, 162562), (380, 81281)]