201520781

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:906

約数の個数: 36

約数和(自身を含む): 264273660

約数和(自身を除く): 62752879

約数列:

[1, 7, 11, 41, 49, 77, 121, 287, 451, 539, 829, 847, 2009, 3157, 4961, 5803, 5929, 9119, 22099, 33989, 34727, 40621, 63833, 100309, 237923, 243089, 373879, 446831, 702163, 1665461, 2617153, 4112669, 4915141, 18320071, 28788683, 201520781]

約数ペア:

[(1, 201520781), (7, 28788683), (11, 18320071), (41, 4915141), (49, 4112669), (77, 2617153), (121, 1665461), (287, 702163), (451, 446831), (539, 373879), (829, 243089), (847, 237923), (2009, 100309), (3157, 63833), (4961, 40621), (5803, 34727), (5929, 33989), (9119, 22099)]