87990305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 117821088

約数和(自身を除く): 29830783

約数列:

[1, 5, 13, 41, 65, 137, 205, 241, 533, 685, 1205, 1781, 2665, 3133, 5617, 8905, 9881, 15665, 28085, 33017, 49405, 73021, 128453, 165085, 365105, 429221, 642265, 1353697, 2146105, 6768485, 17598061, 87990305]

約数ペア:

[(1, 87990305), (5, 17598061), (13, 6768485), (41, 2146105), (65, 1353697), (137, 642265), (205, 429221), (241, 365105), (533, 165085), (685, 128453), (1205, 73021), (1781, 49405), (2665, 33017), (3133, 28085), (5617, 15665), (8905, 9881)]