28200807

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 46332000

約数和(自身を除く): 18131193

約数列:

[1, 3, 9, 17, 19, 51, 57, 89, 109, 153, 171, 267, 323, 327, 801, 969, 981, 1513, 1691, 1853, 2071, 2907, 4539, 5073, 5559, 6213, 9701, 13617, 15219, 16677, 18639, 28747, 29103, 35207, 86241, 87309, 105621, 164917, 184319, 258723, 316863, 494751, 552957, 1484253, 1658871, 3133423, 9400269, 28200807]

約数ペア:

[(1, 28200807), (3, 9400269), (9, 3133423), (17, 1658871), (19, 1484253), (51, 552957), (57, 494751), (89, 316863), (109, 258723), (153, 184319), (171, 164917), (267, 105621), (323, 87309), (327, 86241), (801, 35207), (969, 29103), (981, 28747), (1513, 18639), (1691, 16677), (1853, 15219), (2071, 13617), (2907, 9701), (4539, 6213), (5073, 5559)]