19903317

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{601}}^1$

素因数の和:713

約数の個数: 32

約数和(自身を含む): 32363520

約数和(自身を除く): 12460203

約数列:

[1, 3, 7, 19, 21, 57, 83, 133, 249, 399, 581, 601, 1577, 1743, 1803, 4207, 4731, 11039, 11419, 12621, 33117, 34257, 49883, 79933, 149649, 239799, 349181, 947777, 1047543, 2843331, 6634439, 19903317]

約数ペア:

[(1, 19903317), (3, 6634439), (7, 2843331), (19, 1047543), (21, 947777), (57, 349181), (83, 239799), (133, 149649), (249, 79933), (399, 49883), (581, 34257), (601, 33117), (1577, 12621), (1743, 11419), (1803, 11039), (4207, 4731)]