21442509

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 37509120

約数和(自身を除く): 16066611

約数列:

[1, 3, 9, 11, 23, 27, 33, 43, 69, 73, 99, 129, 207, 219, 253, 297, 387, 473, 621, 657, 759, 803, 989, 1161, 1419, 1679, 1971, 2277, 2409, 2967, 3139, 4257, 5037, 6831, 7227, 8901, 9417, 10879, 12771, 15111, 18469, 21681, 26703, 28251, 32637, 34529, 45333, 55407, 72197, 84753, 97911, 103587, 166221, 216591, 293733, 310761, 498663, 649773, 794167, 932283, 1949319, 2382501, 7147503, 21442509]

約数ペア:

[(1, 21442509), (3, 7147503), (9, 2382501), (11, 1949319), (23, 932283), (27, 794167), (33, 649773), (43, 498663), (69, 310761), (73, 293733), (99, 216591), (129, 166221), (207, 103587), (219, 97911), (253, 84753), (297, 72197), (387, 55407), (473, 45333), (621, 34529), (657, 32637), (759, 28251), (803, 26703), (989, 21681), (1161, 18469), (1419, 15111), (1679, 12771), (1971, 10879), (2277, 9417), (2409, 8901), (2967, 7227), (3139, 6831), (4257, 5037)]