20488475

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^2\times {\mathrm{53}}^1$

素因数の和:164

約数の個数: 36

約数和(自身を含む): 30225744

約数和(自身を除く): 9737269

約数列:

[1, 5, 7, 25, 35, 47, 53, 175, 235, 265, 329, 371, 1175, 1325, 1645, 1855, 2209, 2491, 8225, 9275, 11045, 12455, 15463, 17437, 55225, 62275, 77315, 87185, 117077, 386575, 435925, 585385, 819539, 2926925, 4097695, 20488475]

約数ペア:

[(1, 20488475), (5, 4097695), (7, 2926925), (25, 819539), (35, 585385), (47, 435925), (53, 386575), (175, 117077), (235, 87185), (265, 77315), (329, 62275), (371, 55225), (1175, 17437), (1325, 15463), (1645, 12455), (1855, 11045), (2209, 9275), (2491, 8225)]