20808811520

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4177}}^1$

素因数の和:4348

約数の個数: 176

約数和(自身を含む): 57471899520

約数和(自身を除く): 36663088000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 139, 140, 160, 224, 256, 278, 280, 320, 448, 512, 556, 560, 640, 695, 896, 973, 1024, 1112, 1120, 1280, 1390, 1792, 1946, 2224, 2240, 2560, 2780, 3584, 3892, 4177, 4448, 4480, 4865, 5120, 5560, 7168, 7784, 8354, 8896, 8960, 9730, 11120, 15568, 16708, 17792, 17920, 19460, 20885, 22240, 29239, 31136, 33416, 35584, 35840, 38920, 41770, 44480, 58478, 62272, 66832, 71168, 77840, 83540, 88960, 116956, 124544, 133664, 142336, 146195, 155680, 167080, 177920, 233912, 249088, 267328, 292390, 311360, 334160, 355840, 467824, 498176, 534656, 580603, 584780, 622720, 668320, 711680, 935648, 996352, 1069312, 1161206, 1169560, 1245440, 1336640, 1871296, 2138624, 2322412, 2339120, 2490880, 2673280, 2903015, 3742592, 4064221, 4277248, 4644824, 4678240, 4981760, 5346560, 5806030, 7485184, 8128442, 9289648, 9356480, 10693120, 11612060, 14970368, 16256884, 18579296, 18712960, 20321105, 21386240, 23224120, 29940736, 32513768, 37158592, 37425920, 40642210, 46448240, 65027536, 74317184, 74851840, 81284420, 92896480, 130055072, 148634368, 149703680, 162568840, 185792960, 260110144, 297268736, 325137680, 371585920, 520220288, 594537472, 650275360, 743171840, 1040440576, 1300550720, 1486343680, 2080881152, 2601101440, 2972687360, 4161762304, 5202202880, 10404405760, 20808811520]

約数ペア:

[(1, 20808811520), (2, 10404405760), (4, 5202202880), (5, 4161762304), (7, 2972687360), (8, 2601101440), (10, 2080881152), (14, 1486343680), (16, 1300550720), (20, 1040440576), (28, 743171840), (32, 650275360), (35, 594537472), (40, 520220288), (56, 371585920), (64, 325137680), (70, 297268736), (80, 260110144), (112, 185792960), (128, 162568840), (139, 149703680), (140, 148634368), (160, 130055072), (224, 92896480), (256, 81284420), (278, 74851840), (280, 74317184), (320, 65027536), (448, 46448240), (512, 40642210), (556, 37425920), (560, 37158592), (640, 32513768), (695, 29940736), (896, 23224120), (973, 21386240), (1024, 20321105), (1112, 18712960), (1120, 18579296), (1280, 16256884), (1390, 14970368), (1792, 11612060), (1946, 10693120), (2224, 9356480), (2240, 9289648), (2560, 8128442), (2780, 7485184), (3584, 5806030), (3892, 5346560), (4177, 4981760), (4448, 4678240), (4480, 4644824), (4865, 4277248), (5120, 4064221), (5560, 3742592), (7168, 2903015), (7784, 2673280), (8354, 2490880), (8896, 2339120), (8960, 2322412), (9730, 2138624), (11120, 1871296), (15568, 1336640), (16708, 1245440), (17792, 1169560), (17920, 1161206), (19460, 1069312), (20885, 996352), (22240, 935648), (29239, 711680), (31136, 668320), (33416, 622720), (35584, 584780), (35840, 580603), (38920, 534656), (41770, 498176), (44480, 467824), (58478, 355840), (62272, 334160), (66832, 311360), (71168, 292390), (77840, 267328), (83540, 249088), (88960, 233912), (116956, 177920), (124544, 167080), (133664, 155680), (142336, 146195)]