19640320000

素因数分解:

$2^{15}\times 5^4\times 7^1\times {\mathrm{137}}^1$

素因数の和:194

約数の個数: 320

約数和(自身を含む): 56505849840

約数和(自身を除く): 36865529840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 125, 128, 137, 140, 160, 175, 200, 224, 250, 256, 274, 280, 320, 350, 400, 448, 500, 512, 548, 560, 625, 640, 685, 700, 800, 875, 896, 959, 1000, 1024, 1096, 1120, 1250, 1280, 1370, 1400, 1600, 1750, 1792, 1918, 2000, 2048, 2192, 2240, 2500, 2560, 2740, 2800, 3200, 3425, 3500, 3584, 3836, 4000, 4096, 4375, 4384, 4480, 4795, 5000, 5120, 5480, 5600, 6400, 6850, 7000, 7168, 7672, 8000, 8192, 8750, 8768, 8960, 9590, 10000, 10240, 10960, 11200, 12800, 13700, 14000, 14336, 15344, 16000, 16384, 17125, 17500, 17536, 17920, 19180, 20000, 20480, 21920, 22400, 23975, 25600, 27400, 28000, 28672, 30688, 32000, 32768, 34250, 35000, 35072, 35840, 38360, 40000, 40960, 43840, 44800, 47950, 51200, 54800, 56000, 57344, 61376, 64000, 68500, 70000, 70144, 71680, 76720, 80000, 81920, 85625, 87680, 89600, 95900, 102400, 109600, 112000, 114688, 119875, 122752, 128000, 137000, 140000, 140288, 143360, 153440, 160000, 163840, 171250, 175360, 179200, 191800, 204800, 219200, 224000, 229376, 239750, 245504, 256000, 274000, 280000, 280576, 286720, 306880, 320000, 342500, 350720, 358400, 383600, 409600, 438400, 448000, 479500, 491008, 512000, 548000, 560000, 561152, 573440, 599375, 613760, 640000, 685000, 701440, 716800, 767200, 819200, 876800, 896000, 959000, 982016, 1024000, 1096000, 1120000, 1122304, 1146880, 1198750, 1227520, 1280000, 1370000, 1402880, 1433600, 1534400, 1753600, 1792000, 1918000, 1964032, 2048000, 2192000, 2240000, 2244608, 2397500, 2455040, 2560000, 2740000, 2805760, 2867200, 3068800, 3507200, 3584000, 3836000, 3928064, 4096000, 4384000, 4480000, 4489216, 4795000, 4910080, 5120000, 5480000, 5611520, 5734400, 6137600, 7014400, 7168000, 7672000, 7856128, 8768000, 8960000, 9590000, 9820160, 10240000, 10960000, 11223040, 12275200, 14028800, 14336000, 15344000, 15712256, 17536000, 17920000, 19180000, 19640320, 20480000, 21920000, 22446080, 24550400, 28057600, 28672000, 30688000, 31424512, 35072000, 35840000, 38360000, 39280640, 43840000, 49100800, 56115200, 61376000, 70144000, 71680000, 76720000, 78561280, 87680000, 98201600, 112230400, 122752000, 140288000, 143360000, 153440000, 157122560, 175360000, 196403200, 245504000, 280576000, 306880000, 350720000, 392806400, 491008000, 561152000, 613760000, 701440000, 785612800, 982016000, 1227520000, 1402880000, 1964032000, 2455040000, 2805760000, 3928064000, 4910080000, 9820160000, 19640320000]

約数ペア:

[(1, 19640320000), (2, 9820160000), (4, 4910080000), (5, 3928064000), (7, 2805760000), (8, 2455040000), (10, 1964032000), (14, 1402880000), (16, 1227520000), (20, 982016000), (25, 785612800), (28, 701440000), (32, 613760000), (35, 561152000), (40, 491008000), (50, 392806400), (56, 350720000), (64, 306880000), (70, 280576000), (80, 245504000), (100, 196403200), (112, 175360000), (125, 157122560), (128, 153440000), (137, 143360000), (140, 140288000), (160, 122752000), (175, 112230400), (200, 98201600), (224, 87680000), (250, 78561280), (256, 76720000), (274, 71680000), (280, 70144000), (320, 61376000), (350, 56115200), (400, 49100800), (448, 43840000), (500, 39280640), (512, 38360000), (548, 35840000), (560, 35072000), (625, 31424512), (640, 30688000), (685, 28672000), (700, 28057600), (800, 24550400), (875, 22446080), (896, 21920000), (959, 20480000), (1000, 19640320), (1024, 19180000), (1096, 17920000), (1120, 17536000), (1250, 15712256), (1280, 15344000), (1370, 14336000), (1400, 14028800), (1600, 12275200), (1750, 11223040), (1792, 10960000), (1918, 10240000), (2000, 9820160), (2048, 9590000), (2192, 8960000), (2240, 8768000), (2500, 7856128), (2560, 7672000), (2740, 7168000), (2800, 7014400), (3200, 6137600), (3425, 5734400), (3500, 5611520), (3584, 5480000), (3836, 5120000), (4000, 4910080), (4096, 4795000), (4375, 4489216), (4384, 4480000), (4480, 4384000), (4795, 4096000), (5000, 3928064), (5120, 3836000), (5480, 3584000), (5600, 3507200), (6400, 3068800), (6850, 2867200), (7000, 2805760), (7168, 2740000), (7672, 2560000), (8000, 2455040), (8192, 2397500), (8750, 2244608), (8768, 2240000), (8960, 2192000), (9590, 2048000), (10000, 1964032), (10240, 1918000), (10960, 1792000), (11200, 1753600), (12800, 1534400), (13700, 1433600), (14000, 1402880), (14336, 1370000), (15344, 1280000), (16000, 1227520), (16384, 1198750), (17125, 1146880), (17500, 1122304), (17536, 1120000), (17920, 1096000), (19180, 1024000), (20000, 982016), (20480, 959000), (21920, 896000), (22400, 876800), (23975, 819200), (25600, 767200), (27400, 716800), (28000, 701440), (28672, 685000), (30688, 640000), (32000, 613760), (32768, 599375), (34250, 573440), (35000, 561152), (35072, 560000), (35840, 548000), (38360, 512000), (40000, 491008), (40960, 479500), (43840, 448000), (44800, 438400), (47950, 409600), (51200, 383600), (54800, 358400), (56000, 350720), (57344, 342500), (61376, 320000), (64000, 306880), (68500, 286720), (70000, 280576), (70144, 280000), (71680, 274000), (76720, 256000), (80000, 245504), (81920, 239750), (85625, 229376), (87680, 224000), (89600, 219200), (95900, 204800), (102400, 191800), (109600, 179200), (112000, 175360), (114688, 171250), (119875, 163840), (122752, 160000), (128000, 153440), (137000, 143360), (140000, 140288)]