18869949

素因数分解:

$3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:879

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 15603651

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 119, 147, 153, 189, 357, 441, 459, 833, 839, 1071, 1323, 2499, 2517, 3213, 5873, 7497, 7551, 14263, 17619, 22491, 22653, 41111, 42789, 52857, 99841, 123333, 128367, 158571, 299523, 369999, 385101, 698887, 898569, 1109997, 2096661, 2695707, 6289983, 18869949]

約数ペア:

[(1, 18869949), (3, 6289983), (7, 2695707), (9, 2096661), (17, 1109997), (21, 898569), (27, 698887), (49, 385101), (51, 369999), (63, 299523), (119, 158571), (147, 128367), (153, 123333), (189, 99841), (357, 52857), (441, 42789), (459, 41111), (833, 22653), (839, 22491), (1071, 17619), (1323, 14263), (2499, 7551), (2517, 7497), (3213, 5873)]