19965717

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 31363200

約数和(自身を除く): 11397483

約数列:

[1, 3, 9, 27, 29, 43, 87, 129, 261, 387, 593, 783, 1161, 1247, 1779, 3741, 5337, 11223, 16011, 17197, 25499, 33669, 51591, 76497, 154773, 229491, 464319, 688473, 739471, 2218413, 6655239, 19965717]

約数ペア:

[(1, 19965717), (3, 6655239), (9, 2218413), (27, 739471), (29, 688473), (43, 464319), (87, 229491), (129, 154773), (261, 76497), (387, 51591), (593, 33669), (783, 25499), (1161, 17197), (1247, 16011), (1779, 11223), (3741, 5337)]