19720778896

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1747}}^1\times {\mathrm{7753}}^1$

素因数の和:9528

約数の個数: 80

約数和(自身を含む): 47059460224

約数和(自身を除く): 27338681328

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 1747, 3494, 6988, 7753, 12229, 13976, 15506, 22711, 24458, 27952, 31012, 45422, 48916, 54271, 62024, 90844, 97832, 100789, 108542, 124048, 158977, 181688, 195664, 201578, 217084, 317954, 363376, 403156, 434168, 635908, 705523, 806312, 868336, 1271816, 1411046, 1612624, 2543632, 2822092, 5644184, 11288368, 13544491, 27088982, 54177964, 94811437, 108355928, 176078383, 189622874, 216711856, 352156766, 379245748, 704313532, 758491496, 1232548681, 1408627064, 1516982992, 2465097362, 2817254128, 4930194724, 9860389448, 19720778896]

約数ペア:

[(1, 19720778896), (2, 9860389448), (4, 4930194724), (7, 2817254128), (8, 2465097362), (13, 1516982992), (14, 1408627064), (16, 1232548681), (26, 758491496), (28, 704313532), (52, 379245748), (56, 352156766), (91, 216711856), (104, 189622874), (112, 176078383), (182, 108355928), (208, 94811437), (364, 54177964), (728, 27088982), (1456, 13544491), (1747, 11288368), (3494, 5644184), (6988, 2822092), (7753, 2543632), (12229, 1612624), (13976, 1411046), (15506, 1271816), (22711, 868336), (24458, 806312), (27952, 705523), (31012, 635908), (45422, 434168), (48916, 403156), (54271, 363376), (62024, 317954), (90844, 217084), (97832, 201578), (100789, 195664), (108542, 181688), (124048, 158977)]