78889655440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1999}}^1\times {\mathrm{8087}}^1$

素因数の和:10160

約数の個数: 80

約数和(自身を含む): 186541632000

約数和(自身を除く): 107651976560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 1999, 2440, 3998, 4880, 7996, 8087, 9995, 15992, 16174, 19990, 31984, 32348, 39980, 40435, 64696, 79960, 80870, 121939, 129392, 159920, 161740, 243878, 323480, 487756, 493307, 609695, 646960, 975512, 986614, 1219390, 1951024, 1973228, 2438780, 2466535, 3946456, 4877560, 4933070, 7892912, 9755120, 9866140, 16165913, 19732280, 32331826, 39464560, 64663652, 80829565, 129327304, 161659130, 258654608, 323318260, 646636520, 986120693, 1293273040, 1972241386, 3944482772, 4930603465, 7888965544, 9861206930, 15777931088, 19722413860, 39444827720, 78889655440]

約数ペア:

[(1, 78889655440), (2, 39444827720), (4, 19722413860), (5, 15777931088), (8, 9861206930), (10, 7888965544), (16, 4930603465), (20, 3944482772), (40, 1972241386), (61, 1293273040), (80, 986120693), (122, 646636520), (244, 323318260), (305, 258654608), (488, 161659130), (610, 129327304), (976, 80829565), (1220, 64663652), (1999, 39464560), (2440, 32331826), (3998, 19732280), (4880, 16165913), (7996, 9866140), (8087, 9755120), (9995, 7892912), (15992, 4933070), (16174, 4877560), (19990, 3946456), (31984, 2466535), (32348, 2438780), (39980, 1973228), (40435, 1951024), (64696, 1219390), (79960, 986614), (80870, 975512), (121939, 646960), (129392, 609695), (159920, 493307), (161740, 487756), (243878, 323480)]