20617443

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 39075840

約数和(自身を除く): 18458397

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 47, 63, 77, 99, 141, 189, 211, 231, 297, 329, 423, 517, 633, 693, 987, 1269, 1477, 1551, 1899, 2079, 2321, 2961, 3619, 4431, 4653, 5697, 6963, 8883, 9917, 10857, 13293, 13959, 16247, 20889, 29751, 32571, 39879, 48741, 62667, 69419, 89253, 97713, 109087, 146223, 208257, 267759, 327261, 438669, 624771, 763609, 981783, 1874313, 2290827, 2945349, 6872481, 20617443]

約数ペア:

[(1, 20617443), (3, 6872481), (7, 2945349), (9, 2290827), (11, 1874313), (21, 981783), (27, 763609), (33, 624771), (47, 438669), (63, 327261), (77, 267759), (99, 208257), (141, 146223), (189, 109087), (211, 97713), (231, 89253), (297, 69419), (329, 62667), (423, 48741), (517, 39879), (633, 32571), (693, 29751), (987, 20889), (1269, 16247), (1477, 13959), (1551, 13293), (1899, 10857), (2079, 9917), (2321, 8883), (2961, 6963), (3619, 5697), (4431, 4653)]