20844369920

素因数分解:

$2^{11}\times 5^1\times {\mathrm{11}}^2\times {\mathrm{16823}}^1$

素因数の和:16872

約数の個数: 144

約数和(自身を含む): 54977635440

約数和(自身を除く): 34133265520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 256, 320, 352, 440, 484, 512, 605, 640, 704, 880, 968, 1024, 1210, 1280, 1408, 1760, 1936, 2048, 2420, 2560, 2816, 3520, 3872, 4840, 5120, 5632, 7040, 7744, 9680, 10240, 11264, 14080, 15488, 16823, 19360, 22528, 28160, 30976, 33646, 38720, 56320, 61952, 67292, 77440, 84115, 112640, 123904, 134584, 154880, 168230, 185053, 247808, 269168, 309760, 336460, 370106, 538336, 619520, 672920, 740212, 925265, 1076672, 1239040, 1345840, 1480424, 1850530, 2035583, 2153344, 2691680, 2960848, 3701060, 4071166, 4306688, 5383360, 5921696, 7402120, 8142332, 8613376, 10177915, 10766720, 11843392, 14804240, 16284664, 17226752, 20355830, 21533440, 23686784, 29608480, 32569328, 34453504, 40711660, 43066880, 47373568, 59216960, 65138656, 81423320, 86133760, 94747136, 118433920, 130277312, 162846640, 172267520, 189494272, 236867840, 260554624, 325693280, 378988544, 473735680, 521109248, 651386560, 947471360, 1042218496, 1302773120, 1894942720, 2084436992, 2605546240, 4168873984, 5211092480, 10422184960, 20844369920]

約数ペア:

[(1, 20844369920), (2, 10422184960), (4, 5211092480), (5, 4168873984), (8, 2605546240), (10, 2084436992), (11, 1894942720), (16, 1302773120), (20, 1042218496), (22, 947471360), (32, 651386560), (40, 521109248), (44, 473735680), (55, 378988544), (64, 325693280), (80, 260554624), (88, 236867840), (110, 189494272), (121, 172267520), (128, 162846640), (160, 130277312), (176, 118433920), (220, 94747136), (242, 86133760), (256, 81423320), (320, 65138656), (352, 59216960), (440, 47373568), (484, 43066880), (512, 40711660), (605, 34453504), (640, 32569328), (704, 29608480), (880, 23686784), (968, 21533440), (1024, 20355830), (1210, 17226752), (1280, 16284664), (1408, 14804240), (1760, 11843392), (1936, 10766720), (2048, 10177915), (2420, 8613376), (2560, 8142332), (2816, 7402120), (3520, 5921696), (3872, 5383360), (4840, 4306688), (5120, 4071166), (5632, 3701060), (7040, 2960848), (7744, 2691680), (9680, 2153344), (10240, 2035583), (11264, 1850530), (14080, 1480424), (15488, 1345840), (16823, 1239040), (19360, 1076672), (22528, 925265), (28160, 740212), (30976, 672920), (33646, 619520), (38720, 538336), (56320, 370106), (61952, 336460), (67292, 309760), (77440, 269168), (84115, 247808), (112640, 185053), (123904, 168230), (134584, 154880)]