19728878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{39937}}^1$

素因数の和:39971

約数の個数: 16

約数和(自身を含む): 33547920

約数和(自身を除く): 13819042

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 39937, 79874, 519181, 758803, 1038362, 1517606, 9864439, 19728878]

約数ペア:

[(1, 19728878), (2, 9864439), (13, 1517606), (19, 1038362), (26, 758803), (38, 519181), (247, 79874), (494, 39937)]