20326475

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{283}}^1$

素因数の和:336

約数の個数: 36

約数和(自身を含む): 29000376

約数和(自身を除く): 8673901

約数列:

[1, 5, 13, 17, 25, 65, 85, 169, 221, 283, 325, 425, 845, 1105, 1415, 2873, 3679, 4225, 4811, 5525, 7075, 14365, 18395, 24055, 47827, 62543, 71825, 91975, 120275, 239135, 312715, 813059, 1195675, 1563575, 4065295, 20326475]

約数ペア:

[(1, 20326475), (5, 4065295), (13, 1563575), (17, 1195675), (25, 813059), (65, 312715), (85, 239135), (169, 120275), (221, 91975), (283, 71825), (325, 62543), (425, 47827), (845, 24055), (1105, 18395), (1415, 14365), (2873, 7075), (3679, 5525), (4225, 4811)]