20807847

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:131

約数の個数: 56

約数和(自身を含む): 34941024

約数和(自身を除く): 14133177

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 73, 81, 153, 207, 219, 243, 391, 459, 621, 657, 729, 1173, 1241, 1377, 1679, 1863, 1971, 3519, 3723, 4131, 5037, 5589, 5913, 10557, 11169, 12393, 15111, 16767, 17739, 28543, 31671, 33507, 45333, 53217, 85629, 95013, 100521, 135999, 256887, 285039, 301563, 407997, 770661, 904689, 1223991, 2311983, 6935949, 20807847]

約数ペア:

[(1, 20807847), (3, 6935949), (9, 2311983), (17, 1223991), (23, 904689), (27, 770661), (51, 407997), (69, 301563), (73, 285039), (81, 256887), (153, 135999), (207, 100521), (219, 95013), (243, 85629), (391, 53217), (459, 45333), (621, 33507), (657, 31671), (729, 28543), (1173, 17739), (1241, 16767), (1377, 15111), (1679, 12393), (1863, 11169), (1971, 10557), (3519, 5913), (3723, 5589), (4131, 5037)]