21484412800

素因数分解:

$2^7\times 5^2\times {\mathrm{2087}}^1\times {\mathrm{3217}}^1$

素因数の和:5328

約数の個数: 96

約数和(自身を含む): 53115149520

約数和(自身を除く): 31630736720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 2087, 3200, 3217, 4174, 6434, 8348, 10435, 12868, 16085, 16696, 20870, 25736, 32170, 33392, 41740, 51472, 52175, 64340, 66784, 80425, 83480, 102944, 104350, 128680, 133568, 160850, 166960, 205888, 208700, 257360, 267136, 321700, 333920, 411776, 417400, 514720, 643400, 667840, 834800, 1029440, 1286800, 1335680, 1669600, 2058880, 2573600, 3339200, 5147200, 6678400, 6713879, 10294400, 13427758, 26855516, 33569395, 53711032, 67138790, 107422064, 134277580, 167846975, 214844128, 268555160, 335693950, 429688256, 537110320, 671387900, 859376512, 1074220640, 1342775800, 2148441280, 2685551600, 4296882560, 5371103200, 10742206400, 21484412800]

約数ペア:

[(1, 21484412800), (2, 10742206400), (4, 5371103200), (5, 4296882560), (8, 2685551600), (10, 2148441280), (16, 1342775800), (20, 1074220640), (25, 859376512), (32, 671387900), (40, 537110320), (50, 429688256), (64, 335693950), (80, 268555160), (100, 214844128), (128, 167846975), (160, 134277580), (200, 107422064), (320, 67138790), (400, 53711032), (640, 33569395), (800, 26855516), (1600, 13427758), (2087, 10294400), (3200, 6713879), (3217, 6678400), (4174, 5147200), (6434, 3339200), (8348, 2573600), (10435, 2058880), (12868, 1669600), (16085, 1335680), (16696, 1286800), (20870, 1029440), (25736, 834800), (32170, 667840), (33392, 643400), (41740, 514720), (51472, 417400), (52175, 411776), (64340, 333920), (66784, 321700), (80425, 267136), (83480, 257360), (102944, 208700), (104350, 205888), (128680, 166960), (133568, 160850)]