21572595

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 42624000

約数和(自身を除く): 21051405

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 73, 99, 135, 165, 199, 219, 297, 365, 495, 597, 657, 803, 995, 1095, 1485, 1791, 1971, 2189, 2409, 2985, 3285, 4015, 5373, 6567, 7227, 8955, 9855, 10945, 12045, 14527, 19701, 21681, 26865, 32835, 36135, 43581, 59103, 72635, 98505, 108405, 130743, 159797, 217905, 295515, 392229, 479391, 653715, 798985, 1438173, 1961145, 2396955, 4314519, 7190865, 21572595]

約数ペア:

[(1, 21572595), (3, 7190865), (5, 4314519), (9, 2396955), (11, 1961145), (15, 1438173), (27, 798985), (33, 653715), (45, 479391), (55, 392229), (73, 295515), (99, 217905), (135, 159797), (165, 130743), (199, 108405), (219, 98505), (297, 72635), (365, 59103), (495, 43581), (597, 36135), (657, 32835), (803, 26865), (995, 21681), (1095, 19701), (1485, 14527), (1791, 12045), (1971, 10945), (2189, 9855), (2409, 8955), (2985, 7227), (3285, 6567), (4015, 5373)]