18963721

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 24295680

約数和(自身を除く): 5331959

約数列:

[1, 7, 17, 37, 59, 73, 119, 259, 413, 511, 629, 1003, 1241, 2183, 2701, 4307, 4403, 7021, 8687, 15281, 18907, 30149, 37111, 45917, 73219, 159359, 259777, 321419, 512533, 1115513, 2709103, 18963721]

約数ペア:

[(1, 18963721), (7, 2709103), (17, 1115513), (37, 512533), (59, 321419), (73, 259777), (119, 159359), (259, 73219), (413, 45917), (511, 37111), (629, 30149), (1003, 18907), (1241, 15281), (2183, 8687), (2701, 7021), (4307, 4403)]