19805009920

素因数分解:

$2^{11}\times 5^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:408

約数の個数: 192

約数和(自身を含む): 48696560640

約数和(自身を除く): 28891550720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 127, 128, 157, 160, 194, 254, 256, 314, 320, 388, 485, 508, 512, 628, 635, 640, 776, 785, 970, 1016, 1024, 1256, 1270, 1280, 1552, 1570, 1940, 2032, 2048, 2512, 2540, 2560, 3104, 3140, 3880, 4064, 5024, 5080, 5120, 6208, 6280, 7760, 8128, 10048, 10160, 10240, 12319, 12416, 12560, 15229, 15520, 16256, 19939, 20096, 20320, 24638, 24832, 25120, 30458, 31040, 32512, 39878, 40192, 40640, 49276, 49664, 50240, 60916, 61595, 62080, 65024, 76145, 79756, 80384, 81280, 98552, 99328, 99695, 100480, 121832, 123190, 124160, 130048, 152290, 159512, 160768, 162560, 197104, 198656, 199390, 200960, 243664, 246380, 248320, 260096, 304580, 319024, 321536, 325120, 394208, 398780, 401920, 487328, 492760, 496640, 609160, 638048, 650240, 788416, 797560, 803840, 974656, 985520, 993280, 1218320, 1276096, 1300480, 1576832, 1595120, 1607680, 1934083, 1949312, 1971040, 2436640, 2552192, 3153664, 3190240, 3868166, 3898624, 3942080, 4873280, 5104384, 6307328, 6380480, 7736332, 7797248, 7884160, 9670415, 9746560, 10208768, 12614656, 12760960, 15472664, 15594496, 15768320, 19340830, 19493120, 20417536, 25229312, 25521920, 30945328, 31188992, 31536640, 38681660, 38986240, 40835072, 51043840, 61890656, 63073280, 77363320, 77972480, 102087680, 123781312, 126146560, 154726640, 155944960, 204175360, 247562624, 309453280, 495125248, 618906560, 990250496, 1237813120, 1980500992, 2475626240, 3961001984, 4951252480, 9902504960, 19805009920]

約数ペア:

[(1, 19805009920), (2, 9902504960), (4, 4951252480), (5, 3961001984), (8, 2475626240), (10, 1980500992), (16, 1237813120), (20, 990250496), (32, 618906560), (40, 495125248), (64, 309453280), (80, 247562624), (97, 204175360), (127, 155944960), (128, 154726640), (157, 126146560), (160, 123781312), (194, 102087680), (254, 77972480), (256, 77363320), (314, 63073280), (320, 61890656), (388, 51043840), (485, 40835072), (508, 38986240), (512, 38681660), (628, 31536640), (635, 31188992), (640, 30945328), (776, 25521920), (785, 25229312), (970, 20417536), (1016, 19493120), (1024, 19340830), (1256, 15768320), (1270, 15594496), (1280, 15472664), (1552, 12760960), (1570, 12614656), (1940, 10208768), (2032, 9746560), (2048, 9670415), (2512, 7884160), (2540, 7797248), (2560, 7736332), (3104, 6380480), (3140, 6307328), (3880, 5104384), (4064, 4873280), (5024, 3942080), (5080, 3898624), (5120, 3868166), (6208, 3190240), (6280, 3153664), (7760, 2552192), (8128, 2436640), (10048, 1971040), (10160, 1949312), (10240, 1934083), (12319, 1607680), (12416, 1595120), (12560, 1576832), (15229, 1300480), (15520, 1276096), (16256, 1218320), (19939, 993280), (20096, 985520), (20320, 974656), (24638, 803840), (24832, 797560), (25120, 788416), (30458, 650240), (31040, 638048), (32512, 609160), (39878, 496640), (40192, 492760), (40640, 487328), (49276, 401920), (49664, 398780), (50240, 394208), (60916, 325120), (61595, 321536), (62080, 319024), (65024, 304580), (76145, 260096), (79756, 248320), (80384, 246380), (81280, 243664), (98552, 200960), (99328, 199390), (99695, 198656), (100480, 197104), (121832, 162560), (123190, 160768), (124160, 159512), (130048, 152290)]