18910689

素因数分解:

$3^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{3967}}^1$

素因数の和:4204

約数の個数: 16

約数和(自身を含む): 28950528

約数和(自身を除く): 10039839

約数列:

[1, 3, 7, 21, 227, 681, 1589, 3967, 4767, 11901, 27769, 83307, 900509, 2701527, 6303563, 18910689]

約数ペア:

[(1, 18910689), (3, 6303563), (7, 2701527), (21, 900509), (227, 83307), (681, 27769), (1589, 11901), (3967, 4767)]