20390535

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 41817600

約数和(自身を除く): 21427065

約数列:

[1, 3, 5, 9, 11, 15, 23, 27, 33, 45, 55, 69, 81, 99, 115, 135, 165, 199, 207, 253, 297, 345, 405, 495, 597, 621, 759, 891, 995, 1035, 1265, 1485, 1791, 1863, 2189, 2277, 2985, 3105, 3795, 4455, 4577, 5373, 6567, 6831, 8955, 9315, 10945, 11385, 13731, 16119, 19701, 20493, 22885, 26865, 32835, 34155, 41193, 50347, 59103, 68655, 80595, 98505, 102465, 123579, 151041, 177309, 205965, 251735, 295515, 370737, 453123, 617895, 755205, 886545, 1359369, 1853685, 2265615, 4078107, 6796845, 20390535]

約数ペア:

[(1, 20390535), (3, 6796845), (5, 4078107), (9, 2265615), (11, 1853685), (15, 1359369), (23, 886545), (27, 755205), (33, 617895), (45, 453123), (55, 370737), (69, 295515), (81, 251735), (99, 205965), (115, 177309), (135, 151041), (165, 123579), (199, 102465), (207, 98505), (253, 80595), (297, 68655), (345, 59103), (405, 50347), (495, 41193), (597, 34155), (621, 32835), (759, 26865), (891, 22885), (995, 20493), (1035, 19701), (1265, 16119), (1485, 13731), (1791, 11385), (1863, 10945), (2189, 9315), (2277, 8955), (2985, 6831), (3105, 6567), (3795, 5373), (4455, 4577)]