19491857

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:126

約数の個数: 36

約数和(自身を含む): 26213616

約数和(自身を除く): 6721759

約数列:

[1, 7, 11, 29, 43, 49, 77, 203, 301, 319, 473, 539, 841, 1247, 1421, 2107, 2233, 3311, 5887, 8729, 9251, 13717, 15631, 23177, 36163, 41209, 61103, 64757, 96019, 253141, 397793, 453299, 672133, 1771987, 2784551, 19491857]

約数ペア:

[(1, 19491857), (7, 2784551), (11, 1771987), (29, 672133), (43, 453299), (49, 397793), (77, 253141), (203, 96019), (301, 64757), (319, 61103), (473, 41209), (539, 36163), (841, 23177), (1247, 15631), (1421, 13717), (2107, 9251), (2233, 8729), (3311, 5887)]