20765121920

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{17837}}^1$

素因数の和:17980

約数の個数: 128

約数和(自身を含む): 53055920160

約数和(自身を除く): 32290798240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 107, 128, 136, 160, 170, 214, 272, 320, 340, 428, 535, 544, 640, 680, 856, 1070, 1088, 1360, 1712, 1819, 2140, 2176, 2720, 3424, 3638, 4280, 5440, 6848, 7276, 8560, 9095, 10880, 13696, 14552, 17120, 17837, 18190, 29104, 34240, 35674, 36380, 58208, 68480, 71348, 72760, 89185, 116416, 142696, 145520, 178370, 232832, 285392, 291040, 303229, 356740, 570784, 582080, 606458, 713480, 1141568, 1164160, 1212916, 1426960, 1516145, 1908559, 2283136, 2425832, 2853920, 3032290, 3817118, 4851664, 5707840, 6064580, 7634236, 9542795, 9703328, 11415680, 12129160, 15268472, 19085590, 19406656, 24258320, 30536944, 32445503, 38171180, 38813312, 48516640, 61073888, 64891006, 76342360, 97033280, 122147776, 129782012, 152684720, 162227515, 194066560, 244295552, 259564024, 305369440, 324455030, 519128048, 610738880, 648910060, 1038256096, 1221477760, 1297820120, 2076512192, 2595640240, 4153024384, 5191280480, 10382560960, 20765121920]

約数ペア:

[(1, 20765121920), (2, 10382560960), (4, 5191280480), (5, 4153024384), (8, 2595640240), (10, 2076512192), (16, 1297820120), (17, 1221477760), (20, 1038256096), (32, 648910060), (34, 610738880), (40, 519128048), (64, 324455030), (68, 305369440), (80, 259564024), (85, 244295552), (107, 194066560), (128, 162227515), (136, 152684720), (160, 129782012), (170, 122147776), (214, 97033280), (272, 76342360), (320, 64891006), (340, 61073888), (428, 48516640), (535, 38813312), (544, 38171180), (640, 32445503), (680, 30536944), (856, 24258320), (1070, 19406656), (1088, 19085590), (1360, 15268472), (1712, 12129160), (1819, 11415680), (2140, 9703328), (2176, 9542795), (2720, 7634236), (3424, 6064580), (3638, 5707840), (4280, 4851664), (5440, 3817118), (6848, 3032290), (7276, 2853920), (8560, 2425832), (9095, 2283136), (10880, 1908559), (13696, 1516145), (14552, 1426960), (17120, 1212916), (17837, 1164160), (18190, 1141568), (29104, 713480), (34240, 606458), (35674, 582080), (36380, 570784), (58208, 356740), (68480, 303229), (71348, 291040), (72760, 285392), (89185, 232832), (116416, 178370), (142696, 145520)]