19961018

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{571}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 37559808

約数和(自身を除く): 17598790

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 227, 454, 571, 1142, 1589, 2497, 3178, 3997, 4994, 6281, 7994, 12562, 17479, 34958, 43967, 87934, 129617, 259234, 907319, 1425787, 1814638, 2851574, 9980509, 19961018]

約数ペア:

[(1, 19961018), (2, 9980509), (7, 2851574), (11, 1814638), (14, 1425787), (22, 907319), (77, 259234), (154, 129617), (227, 87934), (454, 43967), (571, 34958), (1142, 17479), (1589, 12562), (2497, 7994), (3178, 6281), (3997, 4994)]