21387054

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^2$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 49161168

約数和(自身を除く): 27774114

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 78, 102, 127, 221, 254, 381, 442, 663, 762, 1326, 1651, 2159, 3302, 4318, 4953, 6477, 9906, 12954, 16129, 28067, 32258, 48387, 56134, 84201, 96774, 168402, 209677, 274193, 419354, 548386, 629031, 822579, 1258062, 1645158, 3564509, 7129018, 10693527, 21387054]

約数ペア:

[(1, 21387054), (2, 10693527), (3, 7129018), (6, 3564509), (13, 1645158), (17, 1258062), (26, 822579), (34, 629031), (39, 548386), (51, 419354), (78, 274193), (102, 209677), (127, 168402), (221, 96774), (254, 84201), (381, 56134), (442, 48387), (663, 32258), (762, 28067), (1326, 16129), (1651, 12954), (2159, 9906), (3302, 6477), (4318, 4953)]