805484800

素因数分解:

$2^8\times 5^2\times {\mathrm{127}}^1\times {\mathrm{991}}^1$

素因数の和:1144

約数の個数: 108

約数和(自身を含む): 2011426816

約数和(自身を除く): 1205942016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 256, 320, 400, 508, 635, 640, 800, 991, 1016, 1270, 1280, 1600, 1982, 2032, 2540, 3175, 3200, 3964, 4064, 4955, 5080, 6350, 6400, 7928, 8128, 9910, 10160, 12700, 15856, 16256, 19820, 20320, 24775, 25400, 31712, 32512, 39640, 40640, 49550, 50800, 63424, 79280, 81280, 99100, 101600, 125857, 126848, 158560, 162560, 198200, 203200, 251714, 253696, 317120, 396400, 406400, 503428, 629285, 634240, 792800, 812800, 1006856, 1258570, 1268480, 1585600, 2013712, 2517140, 3146425, 3171200, 4027424, 5034280, 6292850, 6342400, 8054848, 10068560, 12585700, 16109696, 20137120, 25171400, 32219392, 40274240, 50342800, 80548480, 100685600, 161096960, 201371200, 402742400, 805484800]

約数ペア:

[(1, 805484800), (2, 402742400), (4, 201371200), (5, 161096960), (8, 100685600), (10, 80548480), (16, 50342800), (20, 40274240), (25, 32219392), (32, 25171400), (40, 20137120), (50, 16109696), (64, 12585700), (80, 10068560), (100, 8054848), (127, 6342400), (128, 6292850), (160, 5034280), (200, 4027424), (254, 3171200), (256, 3146425), (320, 2517140), (400, 2013712), (508, 1585600), (635, 1268480), (640, 1258570), (800, 1006856), (991, 812800), (1016, 792800), (1270, 634240), (1280, 629285), (1600, 503428), (1982, 406400), (2032, 396400), (2540, 317120), (3175, 253696), (3200, 251714), (3964, 203200), (4064, 198200), (4955, 162560), (5080, 158560), (6350, 126848), (6400, 125857), (7928, 101600), (8128, 99100), (9910, 81280), (10160, 79280), (12700, 63424), (15856, 50800), (16256, 49550), (19820, 40640), (20320, 39640), (24775, 32512), (25400, 31712)]