19765767

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 32503680

約数和(自身を除く): 12737913

約数列:

[1, 3, 7, 21, 43, 49, 53, 59, 129, 147, 159, 177, 301, 371, 413, 903, 1113, 1239, 2107, 2279, 2537, 2597, 2891, 3127, 6321, 6837, 7611, 7791, 8673, 9381, 15953, 17759, 21889, 47859, 53277, 65667, 111671, 124313, 134461, 153223, 335013, 372939, 403383, 459669, 941227, 2823681, 6588589, 19765767]

約数ペア:

[(1, 19765767), (3, 6588589), (7, 2823681), (21, 941227), (43, 459669), (49, 403383), (53, 372939), (59, 335013), (129, 153223), (147, 134461), (159, 124313), (177, 111671), (301, 65667), (371, 53277), (413, 47859), (903, 21889), (1113, 17759), (1239, 15953), (2107, 9381), (2279, 8673), (2537, 7791), (2597, 7611), (2891, 6837), (3127, 6321)]