20518485

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{757}}^1$

素因数の和:917

約数の個数: 32

約数和(自身を含む): 35656320

約数和(自身を除く): 15137835

約数列:

[1, 3, 5, 13, 15, 39, 65, 139, 195, 417, 695, 757, 1807, 2085, 2271, 3785, 5421, 9035, 9841, 11355, 27105, 29523, 49205, 105223, 147615, 315669, 526115, 1367899, 1578345, 4103697, 6839495, 20518485]

約数ペア:

[(1, 20518485), (3, 6839495), (5, 4103697), (13, 1578345), (15, 1367899), (39, 526115), (65, 315669), (139, 147615), (195, 105223), (417, 49205), (695, 29523), (757, 27105), (1807, 11355), (2085, 9841), (2271, 9035), (3785, 5421)]