19936287

素因数分解:

$3^4\times 7^2\times {\mathrm{5023}}^1$

素因数の和:5049

約数の個数: 30

約数和(自身を含む): 34650528

約数和(自身を除く): 14714241

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5023, 15069, 35161, 45207, 105483, 135621, 246127, 316449, 406863, 738381, 949347, 2215143, 2848041, 6645429, 19936287]

約数ペア:

[(1, 19936287), (3, 6645429), (7, 2848041), (9, 2215143), (21, 949347), (27, 738381), (49, 406863), (63, 316449), (81, 246127), (147, 135621), (189, 105483), (441, 45207), (567, 35161), (1323, 15069), (3969, 5023)]