21907760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 160

約数和(自身を含む): 64281600

約数和(自身を除く): 42373840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 29, 35, 38, 40, 56, 58, 70, 71, 76, 80, 95, 112, 116, 133, 140, 142, 145, 152, 190, 203, 232, 266, 280, 284, 290, 304, 355, 380, 406, 464, 497, 532, 551, 560, 568, 580, 665, 710, 760, 812, 994, 1015, 1064, 1102, 1136, 1160, 1330, 1349, 1420, 1520, 1624, 1988, 2030, 2059, 2128, 2204, 2320, 2485, 2660, 2698, 2755, 2840, 3248, 3857, 3976, 4060, 4118, 4408, 4970, 5320, 5396, 5510, 5680, 6745, 7714, 7952, 8120, 8236, 8816, 9443, 9940, 10295, 10640, 10792, 11020, 13490, 14413, 15428, 16240, 16472, 18886, 19285, 19880, 20590, 21584, 22040, 26980, 28826, 30856, 32944, 37772, 38570, 39121, 39760, 41180, 44080, 47215, 53960, 57652, 61712, 72065, 75544, 77140, 78242, 82360, 94430, 107920, 115304, 144130, 151088, 154280, 156484, 164720, 188860, 195605, 230608, 273847, 288260, 308560, 312968, 377720, 391210, 547694, 576520, 625936, 755440, 782420, 1095388, 1153040, 1369235, 1564840, 2190776, 2738470, 3129680, 4381552, 5476940, 10953880, 21907760]

約数ペア:

[(1, 21907760), (2, 10953880), (4, 5476940), (5, 4381552), (7, 3129680), (8, 2738470), (10, 2190776), (14, 1564840), (16, 1369235), (19, 1153040), (20, 1095388), (28, 782420), (29, 755440), (35, 625936), (38, 576520), (40, 547694), (56, 391210), (58, 377720), (70, 312968), (71, 308560), (76, 288260), (80, 273847), (95, 230608), (112, 195605), (116, 188860), (133, 164720), (140, 156484), (142, 154280), (145, 151088), (152, 144130), (190, 115304), (203, 107920), (232, 94430), (266, 82360), (280, 78242), (284, 77140), (290, 75544), (304, 72065), (355, 61712), (380, 57652), (406, 53960), (464, 47215), (497, 44080), (532, 41180), (551, 39760), (560, 39121), (568, 38570), (580, 37772), (665, 32944), (710, 30856), (760, 28826), (812, 26980), (994, 22040), (1015, 21584), (1064, 20590), (1102, 19880), (1136, 19285), (1160, 18886), (1330, 16472), (1349, 16240), (1420, 15428), (1520, 14413), (1624, 13490), (1988, 11020), (2030, 10792), (2059, 10640), (2128, 10295), (2204, 9940), (2320, 9443), (2485, 8816), (2660, 8236), (2698, 8120), (2755, 7952), (2840, 7714), (3248, 6745), (3857, 5680), (3976, 5510), (4060, 5396), (4118, 5320), (4408, 4970)]