20782225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{769}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 6716015

約数列:

[1, 5, 23, 25, 47, 115, 235, 575, 769, 1081, 1175, 3845, 5405, 17687, 19225, 27025, 36143, 88435, 180715, 442175, 831289, 903575, 4156445, 20782225]

約数ペア:

[(1, 20782225), (5, 4156445), (23, 903575), (25, 831289), (47, 442175), (115, 180715), (235, 88435), (575, 36143), (769, 27025), (1081, 19225), (1175, 17687), (3845, 5405)]