21000503475

素因数分解:

$3^7\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1483}}^1$

素因数の和:1558

約数の個数: 192

約数和(自身を含む): 45871508480

約数和(自身を除く): 24871005005

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 37, 45, 63, 75, 81, 105, 111, 135, 175, 185, 189, 225, 243, 259, 315, 333, 405, 525, 555, 567, 675, 729, 777, 925, 945, 999, 1215, 1295, 1483, 1575, 1665, 1701, 2025, 2187, 2331, 2775, 2835, 2997, 3645, 3885, 4449, 4725, 4995, 5103, 6075, 6475, 6993, 7415, 8325, 8505, 8991, 10381, 10935, 11655, 13347, 14175, 14985, 15309, 18225, 19425, 20979, 22245, 24975, 25515, 26973, 31143, 34965, 37075, 40041, 42525, 44955, 51905, 54675, 54871, 58275, 62937, 66735, 74925, 76545, 80919, 93429, 104895, 111225, 120123, 127575, 134865, 155715, 164613, 174825, 188811, 200205, 224775, 259525, 274355, 280287, 314685, 333675, 360369, 382725, 384097, 404595, 467145, 493839, 524475, 566433, 600615, 674325, 778575, 823065, 840861, 944055, 1001025, 1081107, 1152291, 1371775, 1401435, 1481517, 1573425, 1801845, 1920485, 2022975, 2335725, 2469195, 2522583, 2832165, 3003075, 3243321, 3456873, 4115325, 4204305, 4444551, 4720275, 5405535, 5761455, 7007175, 7407585, 7567749, 9009225, 9602425, 10370619, 12345975, 12612915, 13333653, 14160825, 16216605, 17284365, 21021525, 22222755, 22703247, 27027675, 28807275, 31111857, 37037925, 37838745, 40000959, 51853095, 63064575, 66668265, 81083025, 86421825, 93335571, 111113775, 113516235, 120002877, 155559285, 189193725, 200004795, 259265475, 280006713, 333341325, 466677855, 567581175, 600014385, 777796425, 840020139, 1000023975, 1400033565, 2333389275, 3000071925, 4200100695, 7000167825, 21000503475]

約数ペア:

[(1, 21000503475), (3, 7000167825), (5, 4200100695), (7, 3000071925), (9, 2333389275), (15, 1400033565), (21, 1000023975), (25, 840020139), (27, 777796425), (35, 600014385), (37, 567581175), (45, 466677855), (63, 333341325), (75, 280006713), (81, 259265475), (105, 200004795), (111, 189193725), (135, 155559285), (175, 120002877), (185, 113516235), (189, 111113775), (225, 93335571), (243, 86421825), (259, 81083025), (315, 66668265), (333, 63064575), (405, 51853095), (525, 40000959), (555, 37838745), (567, 37037925), (675, 31111857), (729, 28807275), (777, 27027675), (925, 22703247), (945, 22222755), (999, 21021525), (1215, 17284365), (1295, 16216605), (1483, 14160825), (1575, 13333653), (1665, 12612915), (1701, 12345975), (2025, 10370619), (2187, 9602425), (2331, 9009225), (2775, 7567749), (2835, 7407585), (2997, 7007175), (3645, 5761455), (3885, 5405535), (4449, 4720275), (4725, 4444551), (4995, 4204305), (5103, 4115325), (6075, 3456873), (6475, 3243321), (6993, 3003075), (7415, 2832165), (8325, 2522583), (8505, 2469195), (8991, 2335725), (10381, 2022975), (10935, 1920485), (11655, 1801845), (13347, 1573425), (14175, 1481517), (14985, 1401435), (15309, 1371775), (18225, 1152291), (19425, 1081107), (20979, 1001025), (22245, 944055), (24975, 840861), (25515, 823065), (26973, 778575), (31143, 674325), (34965, 600615), (37075, 566433), (40041, 524475), (42525, 493839), (44955, 467145), (51905, 404595), (54675, 384097), (54871, 382725), (58275, 360369), (62937, 333675), (66735, 314685), (74925, 280287), (76545, 274355), (80919, 259525), (93429, 224775), (104895, 200205), (111225, 188811), (120123, 174825), (127575, 164613), (134865, 155715)]