21513232

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{353}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 45168984

約数和(自身を除く): 23655752

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 293, 353, 586, 706, 1172, 1412, 2344, 2824, 3809, 4589, 4688, 5648, 7618, 9178, 15236, 18356, 30472, 36712, 60944, 73424, 103429, 206858, 413716, 827432, 1344577, 1654864, 2689154, 5378308, 10756616, 21513232]

約数ペア:

[(1, 21513232), (2, 10756616), (4, 5378308), (8, 2689154), (13, 1654864), (16, 1344577), (26, 827432), (52, 413716), (104, 206858), (208, 103429), (293, 73424), (353, 60944), (586, 36712), (706, 30472), (1172, 18356), (1412, 15236), (2344, 9178), (2824, 7618), (3809, 5648), (4589, 4688)]