19219221

素因数分解:

$3^3\times 7^2\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 33744000

約数和(自身を除く): 14524779

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 73, 147, 189, 199, 219, 441, 511, 597, 657, 1323, 1393, 1533, 1791, 1971, 3577, 4179, 4599, 5373, 9751, 10731, 12537, 13797, 14527, 29253, 32193, 37611, 43581, 87759, 96579, 101689, 130743, 263277, 305067, 392229, 711823, 915201, 2135469, 2745603, 6406407, 19219221]

約数ペア:

[(1, 19219221), (3, 6406407), (7, 2745603), (9, 2135469), (21, 915201), (27, 711823), (49, 392229), (63, 305067), (73, 263277), (147, 130743), (189, 101689), (199, 96579), (219, 87759), (441, 43581), (511, 37611), (597, 32193), (657, 29253), (1323, 14527), (1393, 13797), (1533, 12537), (1791, 10731), (1971, 9751), (3577, 5373), (4179, 4599)]