18926518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{5237}}^1$

素因数の和:5391

約数の個数: 16

約数和(自身を含む): 30799440

約数和(自身を除く): 11872922

約数列:

[1, 2, 13, 26, 139, 278, 1807, 3614, 5237, 10474, 68081, 136162, 727943, 1455886, 9463259, 18926518]

約数ペア:

[(1, 18926518), (2, 9463259), (13, 1455886), (26, 727943), (139, 136162), (278, 68081), (1807, 10474), (3614, 5237)]