21591297

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{643}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 39381888

約数和(自身を除く): 17790591

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 63, 91, 117, 123, 273, 287, 369, 533, 643, 819, 861, 1599, 1929, 2583, 3731, 4501, 4797, 5787, 8359, 11193, 13503, 25077, 26363, 33579, 40509, 58513, 75231, 79089, 175539, 184541, 237267, 342719, 526617, 553623, 1028157, 1660869, 2399033, 3084471, 7197099, 21591297]

約数ペア:

[(1, 21591297), (3, 7197099), (7, 3084471), (9, 2399033), (13, 1660869), (21, 1028157), (39, 553623), (41, 526617), (63, 342719), (91, 237267), (117, 184541), (123, 175539), (273, 79089), (287, 75231), (369, 58513), (533, 40509), (643, 33579), (819, 26363), (861, 25077), (1599, 13503), (1929, 11193), (2583, 8359), (3731, 5787), (4501, 4797)]