21502439

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1361}}^1$

素因数の和:1466

約数の個数: 16

約数和(自身を含む): 25670976

約数和(自身を除く): 4168537

約数列:

[1, 7, 37, 61, 259, 427, 1361, 2257, 9527, 15799, 50357, 83021, 352499, 581147, 3071777, 21502439]

約数ペア:

[(1, 21502439), (7, 3071777), (37, 581147), (61, 352499), (259, 83021), (427, 50357), (1361, 15799), (2257, 9527)]