201721863

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{701}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 313777152

約数和(自身を除く): 112055289

約数列:

[1, 3, 7, 21, 71, 193, 213, 497, 579, 701, 1351, 1491, 2103, 4053, 4907, 13703, 14721, 41109, 49771, 95921, 135293, 149313, 287763, 348397, 405879, 947051, 1045191, 2841153, 9605803, 28817409, 67240621, 201721863]

約数ペア:

[(1, 201721863), (3, 67240621), (7, 28817409), (21, 9605803), (71, 2841153), (193, 1045191), (213, 947051), (497, 405879), (579, 348397), (701, 287763), (1351, 149313), (1491, 135293), (2103, 95921), (4053, 49771), (4907, 41109), (13703, 14721)]