21373605

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 64

約数和(自身を含む): 42681600

約数和(自身を除く): 21307995

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 37, 45, 55, 99, 111, 135, 165, 185, 297, 333, 389, 407, 495, 555, 999, 1167, 1221, 1485, 1665, 1945, 2035, 3501, 3663, 4279, 4995, 5835, 6105, 10503, 10989, 12837, 14393, 17505, 18315, 21395, 38511, 43179, 52515, 54945, 64185, 71965, 115533, 129537, 158323, 192555, 215895, 388611, 474969, 577665, 647685, 791615, 1424907, 1943055, 2374845, 4274721, 7124535, 21373605]

約数ペア:

[(1, 21373605), (3, 7124535), (5, 4274721), (9, 2374845), (11, 1943055), (15, 1424907), (27, 791615), (33, 647685), (37, 577665), (45, 474969), (55, 388611), (99, 215895), (111, 192555), (135, 158323), (165, 129537), (185, 115533), (297, 71965), (333, 64185), (389, 54945), (407, 52515), (495, 43179), (555, 38511), (999, 21395), (1167, 18315), (1221, 17505), (1485, 14393), (1665, 12837), (1945, 10989), (2035, 10503), (3501, 6105), (3663, 5835), (4279, 4995)]