21583665

素因数分解:

$3^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:543

約数の個数: 40

約数和(自身を含む): 39073320

約数和(自身を除く): 17489655

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 137, 389, 405, 411, 685, 1167, 1233, 1945, 2055, 3501, 3699, 5835, 6165, 10503, 11097, 17505, 18495, 31509, 52515, 53293, 55485, 157545, 159879, 266465, 479637, 799395, 1438911, 2398185, 4316733, 7194555, 21583665]

約数ペア:

[(1, 21583665), (3, 7194555), (5, 4316733), (9, 2398185), (15, 1438911), (27, 799395), (45, 479637), (81, 266465), (135, 159879), (137, 157545), (389, 55485), (405, 53293), (411, 52515), (685, 31509), (1167, 18495), (1233, 17505), (1945, 11097), (2055, 10503), (3501, 6165), (3699, 5835)]