20151285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 40919040

約数和(自身を除く): 20767755

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 73, 77, 105, 165, 219, 231, 239, 365, 385, 511, 717, 803, 1095, 1155, 1195, 1533, 1673, 2409, 2555, 2629, 3585, 4015, 5019, 5621, 7665, 7887, 8365, 12045, 13145, 16863, 17447, 18403, 25095, 28105, 39435, 52341, 55209, 84315, 87235, 92015, 122129, 191917, 261705, 276045, 366387, 575751, 610645, 959585, 1343419, 1831935, 2878755, 4030257, 6717095, 20151285]

約数ペア:

[(1, 20151285), (3, 6717095), (5, 4030257), (7, 2878755), (11, 1831935), (15, 1343419), (21, 959585), (33, 610645), (35, 575751), (55, 366387), (73, 276045), (77, 261705), (105, 191917), (165, 122129), (219, 92015), (231, 87235), (239, 84315), (365, 55209), (385, 52341), (511, 39435), (717, 28105), (803, 25095), (1095, 18403), (1155, 17447), (1195, 16863), (1533, 13145), (1673, 12045), (2409, 8365), (2555, 7887), (2629, 7665), (3585, 5621), (4015, 5019)]