21340215

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36479}}^1$

素因数の和:36503

約数の個数: 24

約数和(自身を含む): 39836160

約数和(自身を除く): 18495945

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 36479, 109437, 182395, 328311, 474227, 547185, 1422681, 1641555, 2371135, 4268043, 7113405, 21340215]

約数ペア:

[(1, 21340215), (3, 7113405), (5, 4268043), (9, 2371135), (13, 1641555), (15, 1422681), (39, 547185), (45, 474227), (65, 328311), (117, 182395), (195, 109437), (585, 36479)]