19943787

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 29286400

約数和(自身を除く): 9342613

約数列:

[1, 3, 19, 43, 57, 79, 103, 129, 237, 309, 817, 1501, 1957, 2451, 3397, 4429, 4503, 5871, 8137, 10191, 13287, 24411, 64543, 84151, 154603, 193629, 252453, 349891, 463809, 1049673, 6647929, 19943787]

約数ペア:

[(1, 19943787), (3, 6647929), (19, 1049673), (43, 463809), (57, 349891), (79, 252453), (103, 193629), (129, 154603), (237, 84151), (309, 64543), (817, 24411), (1501, 13287), (1957, 10191), (2451, 8137), (3397, 5871), (4429, 4503)]